Fix styling in label color picker and pick random default colors

Signed-off-by: Julius Härtl <jus@bitgrid.net>

package.json

@@ -32,7 +32,7 @@
 		"@nextcloud/axios": "^1.3.1",
 		"@nextcloud/l10n": "^1.0.1",
 		"@nextcloud/router": "^1.0.0",
-		"@nextcloud/vue": "^1.2.8",
+		"@nextcloud/vue": "^1.3.0",
 		"fuse.js": "^3.4.6",
 		"nextcloud-server": "^0.15.10",
 		"nextcloud-vue-collections": "^0.7.1",