# PATCH Update the customiser colour scheme

Partially update the colour scheme with a JSON Merge Patch (RFC 7396): the request body is a JSON object that contains only the colours to change. Omitted colours are unchanged, null clears a colour so the customer customiser uses its built-in default again, and an empty object `{}` is a valid no-op. Each value must be a hex colour: `#rgb`, `#rgba`, `#rrggbb` or `#rrggbbaa`. The live preview background is `visualisation_background_colour`. A property this resource does not define is refused with a 422 problem with code `unknown_field`, and `object`, `customiser_id` and `updated_at` are refused as read-only. The first write creates the colour scheme. Requires the `customisers:write` scope. A successful update immediately changes the storefront: the customiser's cached configuration is invalidated and translated language content is resynchronised. It never regenerates your Shopify products, product images, or product cache. Send an `Idempotency-Key` header (1-255 visible ASCII characters, e.g. a UUID) to make the write safe to retry: repeating the same key with the same body replays the original response (marked `Idempotency-Replay: true`) without executing again; the same key with a different body is a 409 problem with code `idempotency_key_conflict`. The header is optional here, as on the option families' update operations. Validation failures are 422 problems: `validation_failed` lists every field error in `errors[]` with a JSON `pointer`. A 400 problem means the body is not valid JSON; a 422 problem with code `invalid_document` means the body is not a JSON object. 401/403/404/429 behave as on the read operation, with `customisers:write` as the required scope.

- Source URL: https://www.signcustomiser.com/help/api/v3-patch-update-the-customiser-colour-scheme/
- Markdown URL: https://www.signcustomiser.com/help/api/v3-patch-update-the-customiser-colour-scheme.md
- Group: Customiser colour scheme
- Method: PATCH
- Path: /api/v3/customisers/{customiser_id}/colour-scheme
- Auth: Bearer token
- Required scopes: `customisers:write`

## Path parameters

- customiser_id (string, required): The customiser id, from the list customisers operation. Example: 1

## Body parameters

- background_colour (string, optional): No description provided.
- box_colour (string, optional): No description provided.
- box_text_colour (string, optional): No description provided.
- button_text_colour (string, optional): No description provided.
- control_bar_background_colour (string, optional): No description provided.
- control_bar_button_border_colour (string, optional): No description provided.
- control_bar_button_colour (string, optional): No description provided.
- control_bar_button_hover_colour (string, optional): No description provided.
- control_bar_icon_colour (string, optional): No description provided.
- discount_price_colour (string, optional): No description provided.
- form_error_colour (string, optional): No description provided.
- link_colour (string, optional): No description provided.
- main_discount_price_colour (string, optional): No description provided.
- main_price_colour (string, optional): No description provided.
- measurement_display_colour (string, optional): No description provided.
- modal_background_colour (string, optional): No description provided.
- modal_overlay_colour (string, optional): No description provided.
- modal_text_colour (string, optional): No description provided.
- outline_colour (string, optional): No description provided.
- pending_colour (string, optional): No description provided.
- price_colour (string, optional): No description provided.
- price_label_colour (string, optional): No description provided.
- primary_colour (string, optional): No description provided.
- save_form_background_colour (string, optional): No description provided.
- save_form_border_colour (string, optional): No description provided.
- save_form_button_colour (string, optional): No description provided.
- save_form_button_text_colour (string, optional): No description provided.
- save_form_heading_colour (string, optional): No description provided.
- save_form_text_colour (string, optional): No description provided.
- secondary_background_colour (string, optional): No description provided.
- secondary_colour (string, optional): No description provided.
- secondary_text_colour (string, optional): No description provided.
- selection_number_background_colour (string, optional): No description provided.
- selection_number_text_colour (string, optional): No description provided.
- success_colour (string, optional): No description provided.
- text_colour (string, optional): No description provided.
- text_input_background_colour (string, optional): No description provided.
- visualisation_background_colour (string, optional): No description provided.
- visualisation_text_colour (string, optional): No description provided.

## Request body example

```json
{
  "background_colour": "#1f2937",
  "box_colour": "#1f2937",
  "box_text_colour": "#1f2937",
  "button_text_colour": "#1f2937",
  "control_bar_background_colour": "#1f2937",
  "control_bar_button_border_colour": "#1f2937",
  "control_bar_button_colour": "#1f2937",
  "control_bar_button_hover_colour": "#1f2937",
  "control_bar_icon_colour": "#1f2937",
  "discount_price_colour": "#1f2937",
  "form_error_colour": "#1f2937",
  "link_colour": "#1f2937",
  "main_discount_price_colour": "#1f2937",
  "main_price_colour": "#1f2937",
  "measurement_display_colour": "#1f2937",
  "modal_background_colour": "#1f2937",
  "modal_overlay_colour": "#1f2937",
  "modal_text_colour": "#1f2937",
  "outline_colour": "#1f2937",
  "pending_colour": "#1f2937",
  "price_colour": "#1f2937",
  "price_label_colour": "#1f2937",
  "primary_colour": "#1f2937",
  "save_form_background_colour": "#1f2937",
  "save_form_border_colour": "#1f2937",
  "save_form_button_colour": "#1f2937",
  "save_form_button_text_colour": "#1f2937",
  "save_form_heading_colour": "#1f2937",
  "save_form_text_colour": "#1f2937",
  "secondary_background_colour": "#1f2937",
  "secondary_colour": "#1f2937",
  "secondary_text_colour": "#1f2937",
  "selection_number_background_colour": "#1f2937",
  "selection_number_text_colour": "#1f2937",
  "success_colour": "#1f2937",
  "text_colour": "#1f2937",
  "text_input_background_colour": "#1f2937",
  "visualisation_background_colour": "#1f2937",
  "visualisation_text_colour": "#1f2937"
}
```

## cURL example

```bash
curl https://web.signcustomiser.com/api/v3/customisers/1/colour-scheme \
  --request PATCH \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN' \
  --header 'Content-Type: application/json' \
  --data '{
  "background_colour": "#1f2937",
  "box_colour": "#1f2937",
  "box_text_colour": "#1f2937",
  "button_text_colour": "#1f2937",
  "control_bar_background_colour": "#1f2937",
  "control_bar_button_border_colour": "#1f2937",
  "control_bar_button_colour": "#1f2937",
  "control_bar_button_hover_colour": "#1f2937",
  "control_bar_icon_colour": "#1f2937",
  "discount_price_colour": "#1f2937",
  "form_error_colour": "#1f2937",
  "link_colour": "#1f2937",
  "main_discount_price_colour": "#1f2937",
  "main_price_colour": "#1f2937",
  "measurement_display_colour": "#1f2937",
  "modal_background_colour": "#1f2937",
  "modal_overlay_colour": "#1f2937",
  "modal_text_colour": "#1f2937",
  "outline_colour": "#1f2937",
  "pending_colour": "#1f2937",
  "price_colour": "#1f2937",
  "price_label_colour": "#1f2937",
  "primary_colour": "#1f2937",
  "save_form_background_colour": "#1f2937",
  "save_form_border_colour": "#1f2937",
  "save_form_button_colour": "#1f2937",
  "save_form_button_text_colour": "#1f2937",
  "save_form_heading_colour": "#1f2937",
  "save_form_text_colour": "#1f2937",
  "secondary_background_colour": "#1f2937",
  "secondary_colour": "#1f2937",
  "secondary_text_colour": "#1f2937",
  "selection_number_background_colour": "#1f2937",
  "selection_number_text_colour": "#1f2937",
  "success_colour": "#1f2937",
  "text_colour": "#1f2937",
  "text_input_background_colour": "#1f2937",
  "visualisation_background_colour": "#1f2937",
  "visualisation_text_colour": "#1f2937"
}'
```

## Response examples

### 200 Colour scheme

```json
{
  "data": {
    "object": "colour_scheme",
    "customiser_id": 42,
    "background_colour": "#1f2937",
    "box_colour": "#ffffff",
    "box_text_colour": "#f97316",
    "button_text_colour": "#0ea5e9",
    "control_bar_background_colour": "#1f2937",
    "control_bar_button_border_colour": "#ffffff",
    "control_bar_button_colour": "#f97316",
    "control_bar_button_hover_colour": "#0ea5e9",
    "control_bar_icon_colour": "#1f2937",
    "discount_price_colour": "#ffffff",
    "form_error_colour": "#f97316",
    "link_colour": "#0ea5e9",
    "main_discount_price_colour": "#1f2937",
    "main_price_colour": "#ffffff",
    "measurement_display_colour": "#f97316",
    "modal_background_colour": "#0ea5e9",
    "modal_overlay_colour": "#1f2937",
    "modal_text_colour": "#ffffff",
    "outline_colour": "#f97316",
    "pending_colour": "#0ea5e9",
    "price_colour": "#1f2937",
    "price_label_colour": "#ffffff",
    "primary_colour": "#f97316",
    "save_form_background_colour": "#0ea5e9",
    "save_form_border_colour": "#1f2937",
    "save_form_button_colour": "#ffffff",
    "save_form_button_text_colour": "#f97316",
    "save_form_heading_colour": "#0ea5e9",
    "save_form_text_colour": "#1f2937",
    "secondary_background_colour": "#ffffff",
    "secondary_colour": "#f97316",
    "secondary_text_colour": "#0ea5e9",
    "selection_number_background_colour": "#1f2937",
    "selection_number_text_colour": "#ffffff",
    "success_colour": "#f97316",
    "text_colour": "#0ea5e9",
    "text_input_background_colour": "#1f2937",
    "visualisation_background_colour": "#ffffff",
    "visualisation_text_colour": "#f97316",
    "updated_at": "2026-05-04T09:12:31Z"
  },
  "links": {
    "self": "https://web.signcustomiser.com/api/v3/customisers/42/colour-scheme",
    "documentation": "https://www.signcustomiser.com/help/api/"
  },
  "meta": {
    "api_version": "v3",
    "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
  }
}
```

### 400 Malformed JSON body

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/malformed_json",
  "title": "Malformed JSON",
  "status": 400,
  "code": "malformed_json",
  "detail": "The request body is not valid JSON: Syntax error.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 401 Missing API key

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/missing_api_key",
  "title": "Missing API key",
  "status": 401,
  "code": "missing_api_key",
  "detail": "Provide a store API key as a bearer token: Authorization: Bearer <api key>. Keys are created in the merchant admin under Integrate → API Tokens.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 403 Insufficient scope

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/insufficient_scope",
  "title": "Insufficient scope",
  "status": 403,
  "code": "insufficient_scope",
  "detail": "This operation requires the customisers:write scope, but the API key grants the following scopes: customisers:read. Create a key that includes the required scope in the merchant admin under Integrate → API Tokens.",
  "required_scopes": [
    "customisers:write"
  ],
  "granted_scopes": [
    "customisers:read"
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 404 Unknown customiser

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/resource_not_found",
  "title": "Resource not found",
  "status": 404,
  "code": "resource_not_found",
  "detail": "The requested resource does not exist or does not belong to the authenticated store.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 409 Idempotency key conflict

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/idempotency_key_conflict",
  "title": "Idempotency key conflict",
  "status": 409,
  "code": "idempotency_key_conflict",
  "detail": "This Idempotency-Key was already used for a different request body on this operation. An idempotency key identifies one exact request: retry the original body to replay its response, or send the new body with a fresh key.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 422 Not a hex colour

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/validation_failed",
  "title": "Validation failed",
  "status": 422,
  "code": "validation_failed",
  "detail": "The request payload failed validation. Correct the fields listed in errors and retry.",
  "errors": [
    {
      "pointer": "/primary_colour",
      "code": "hex_color",
      "detail": "The primary colour field must be a valid hexadecimal color."
    }
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 422 Unknown field

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/unknown_field",
  "title": "Unknown field",
  "status": 422,
  "code": "unknown_field",
  "detail": "The request contains fields this operation does not define: /visualisation_bg_colour.",
  "errors": [
    {
      "pointer": "/visualisation_bg_colour",
      "code": "unknown_field",
      "detail": "The field \"visualisation_bg_colour\" is not supported by this operation."
    }
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 429 Rate limited

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/rate_limited",
  "title": "Too many requests",
  "status": 429,
  "code": "rate_limited",
  "detail": "You have exceeded the request limit for this API key. Wait 60 seconds, then retry.",
  "retry_after": 60,
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```