chore(Notification)!: rename progressColor to color and style icon

This also removes `progressVariant` prop

docs/content/5.overlays/6.notification.md

@@ -92,8 +92,8 @@ baseProps:
   id: 4
   timeout: 0
   title: 'Notification'
-  description: 'This is a notification.'
 props:
+  description: 'This is a notification.'
   avatar:
     src: 'https://avatars.githubusercontent.com/u/739984?v=4'
 excludedProps:
@@ -118,7 +118,9 @@ props:
 ---
 ::
 
-You can change the color of the progress bar through the `progress-color` prop.
+### Color
+
+Use the `color` prop to change the progress and icon color of the Notification.
 
 ::component-card
 ---
@@ -128,7 +130,10 @@ baseProps:
   description: 'This is a notification.'
   timeout: 600000
 props:
-  progressColor: 'primary'
+  icon: 'i-heroicons-x-circle'
+  color: 'red'
+excludedProps:
+  - icon
 ---
 ::