feedback

@xen-orchestra/web-core/docs/composables/context.composable.md

@@ -82,6 +82,12 @@ const CounterContext = createContext(10, counter => ({
 
 // Example 2. Return a computed value
 const DoubleContext = createContext(10, num => computed(() => num.value * 2))
+
+// Example 3. Use a previous value
+const ColorContext = createContext('info' as Color, (color, previousColor) => ({
+  name: color,
+  colorContextClass: computed(() => (previousColor.value === color.value ? undefined : `color-context-${color.value}`)),
+}))
 ```
 
 ### 2. Use the context

@xen-orchestra/web-core/docs/contexts/color-context.md

@@ -69,7 +69,7 @@ Color contexts rely on the type `Color` defined in `/lib/types/color.type.ts`:
 
 ## Usage
 
-To get and set the color context in a component, you can use the `useContext` composable, which takes a `ColorContext` (defined in `context.ts`) as first parameter and returns the `colorContextClass`:
+To get and set the color context in a component, you can pass the `ColorContext` to `useContext` and apply the `colorContextClass` to the root component:
 
 ```ts
 // ParentComponent.vue