diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/blocks/separator/block.json
--- a/wp/wp-includes/blocks/separator/block.json	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/blocks/separator/block.json	Tue Sep 27 16:37:53 2022 +0200
@@ -1,4 +1,5 @@
 {
+	"$schema": "https://schemas.wp.org/trunk/block.json",
 	"apiVersion": 2,
 	"name": "core/separator",
 	"title": "Separator",
@@ -7,16 +8,23 @@
 	"keywords": [ "horizontal-line", "hr", "divider" ],
 	"textdomain": "default",
 	"attributes": {
-		"color": {
-			"type": "string"
-		},
-		"customColor": {
-			"type": "string"
+		"opacity": {
+			"type": "string",
+			"default": "alpha-channel"
 		}
 	},
 	"supports": {
 		"anchor": true,
-		"align": [ "center", "wide", "full" ]
+		"align": [ "center", "wide", "full" ],
+		"color": {
+			"__experimentalSkipSerialization": true,
+			"gradients": true,
+			"background": true,
+			"text": false,
+			"__experimentalDefaultControls": {
+				"background": true
+			}
+		}
 	},
 	"styles": [
 		{ "name": "default", "label": "Default", "isDefault": true },