yes

modules/wallpaper-engine/presets/rain/previewrefractive/models/effectpreview.json

@@ -0,0 +1,4 @@
+{
+	"autosize" : true,
+	"material" : "materials/effectpreview.json"
+}

modules/wallpaper-engine/presets/rain/previewrefractive/models/grid.json

@@ -0,0 +1,4 @@
+{
+	"autosize" : true,
+	"material" : "materials/grid.json"
+}