feat(ol-vector-layer): add background property

Author: d-koppenhagen

Diff for: docs/componentsguide/layers/vectorlayer/index.md

@@ -55,11 +55,17 @@ A CSS class name to set to the layer element.
 
 ### opacity
 
-- **Type**: `number `
+- **Type**: `number`
 - **Default**: `1`
 
 Opacity (0, 1).
 
+### background
+
+- **Type**: `BackgroundColor`
+
+A css color, or a function called with a view resolution returning a css color.
+
 ### visible
 
 - **Type**: `boolean`

Diff for: src/components/layers/OlVectorLayer.vue

@@ -16,10 +16,12 @@ import {
 import type { StyleLike } from "ol/style/Style";
 import type { FlatStyleLike } from "ol/style/flat";
 import type LayerGroup from "ol/layer/Group";
+import type { BackgroundColor } from "ol/layer/Base";
 
 const props = withDefaults(
   defineProps<
     LayersCommonProps & {
+      background?: BackgroundColor;
       renderBuffer?: number;
       updateWhileAnimating?: boolean;
       styles?: StyleLike | FlatStyleLike | null;