diff --git a/addons/material_maker/nodes/colorize/colorize.gd b/addons/material_maker/nodes/colorize/colorize.gd
index ab660f9..eba3b08 100644
--- a/addons/material_maker/nodes/colorize/colorize.gd
+++ b/addons/material_maker/nodes/colorize/colorize.gd
@@ -16,8 +16,8 @@ func _get_shader_code(uv):
 	if variant_index == -1:
 		variant_index = generated_variants.size()
 		generated_variants.append(uv)
-		rv.code = src_code.code+"vec3 %s_%d_rgb = %s_gradient(%s);\n" % [ name, variant_index, name, src_code.f ]
-	rv.rgb = "%s_%d_rgb" % [ name, variant_index ]
+		rv.code = src_code.code+"vec4 %s_%d_rgba = %s_gradient(%s);\n" % [ name, variant_index, name, src_code.f ]
+	rv.rgba = "%s_%d_rgba" % [ name, variant_index ]
 	return rv
 
 func _on_Control_updated(v):
diff --git a/addons/material_maker/nodes/colorize/colorize.tscn b/addons/material_maker/nodes/colorize/colorize.tscn
index a3c7031..9026162 100644
--- a/addons/material_maker/nodes/colorize/colorize.tscn
+++ b/addons/material_maker/nodes/colorize/colorize.tscn
@@ -3,11 +3,10 @@
 [ext_resource path="res://addons/material_maker/nodes/colorize/colorize.gd" type="Script" id=1]
 [ext_resource path="res://addons/material_maker/widgets/gradient_editor.tscn" type="PackedScene" id=2]
 
-
 [sub_resource type="Theme" id=1]
 
 
-[node name="Colorize" type="GraphNode"]
+[node name="Colorize" type="GraphNode" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -36,7 +35,7 @@ slot/0/left_type = 0
 slot/0/left_color = Color( 0.756863, 0.756863, 0.756863, 1 )
 slot/0/right_enabled = true
 slot/0/right_type = 0
-slot/0/right_color = Color( 0.5, 0.5, 1, 1 )
+slot/0/right_color = Color( 0, 1, 0, 0.502745 )
 script = ExtResource( 1 )
 _sections_unfolded = [ "Theme", "slot", "slot/0" ]
 
diff --git a/addons/material_maker/types/gradient.gd b/addons/material_maker/types/gradient.gd
index 2827b09..1dc72d5 100644
--- a/addons/material_maker/types/gradient.gd
+++ b/addons/material_maker/types/gradient.gd
@@ -4,7 +4,7 @@ class CustomSorter:
 	static func compare(a, b):
 		return a.v < b.v
 
-var points = [ { v=0.0, c=Color(0.0, 0.0, 0.0) }, { v=1.0, c=Color(1.0, 1.0, 1.0) } ]
+var points = [ { v=0.0, c=Color(0.0, 0.0, 0.0, 0.0) }, { v=1.0, c=Color(1.0, 1.0, 1.0, 1.0) } ]
 var sorted = true
 
 func _ready():
@@ -46,12 +46,12 @@ func get_color(x):
 
 # get_color_in_shader
 func gcis(color):
-	return "vec3(%.9f,%.9f,%.9f)" % [color.r, color.g, color.b]
+	return "vec4(%.9f,%.9f,%.9f,%.9f)" % [color.r, color.g, color.b, color.a]
 
 func get_shader(name):
 	sort()
 	var shader
-	shader  = "vec3 "+name+"(float x) {\n"
+	shader  = "vec4 "+name+"(float x) {\n"
 	shader += "  if (x < %.9f) {\n" % points[0].v
 	shader += "    return "+gcis(points[0].c)+";\n"
 	var s = points.size()-1
@@ -72,7 +72,7 @@ func serialize():
 	sort()
 	var rv = []
 	for p in points:
-		rv.append({ pos=p.v, r=p.c.r, g=p.c.g, b=p.c.b })
+		rv.append({ pos=p.v, r=p.c.r, g=p.c.g, b=p.c.b, a=p.c.a })
 	rv = { type="Gradient", points=rv }
 	return rv
 
@@ -80,7 +80,9 @@ func deserialize(v):
 	clear()
 	if typeof(v) == TYPE_ARRAY:
 		for i in v:
-			add_point(i.pos, Color(i.r, i.g, i.b))
+			if !i.has("a"): i.a = 1.0
+			add_point(i.pos, Color(i.r, i.g, i.b, i.a))
 	elif typeof(v) == TYPE_DICTIONARY && v.has("type") && v.type == "Gradient":
 		for i in v.points:
-			add_point(i.pos, Color(i.r, i.g, i.b))
+			if !i.has("a"): i.a = 1.0
+			add_point(i.pos, Color(i.r, i.g, i.b, i.a))
diff --git a/addons/material_maker/widgets/gradient_editor.gd b/addons/material_maker/widgets/gradient_editor.gd
index e304f40..afc6427 100644
--- a/addons/material_maker/widgets/gradient_editor.gd
+++ b/addons/material_maker/widgets/gradient_editor.gd
@@ -9,7 +9,7 @@ class GradientCursor:
 	func _ready():
 		rect_position = Vector2(0, 15)
 		rect_size = Vector2(WIDTH, 15)
-
+	
 	func _gui_input(ev):
 		if ev is InputEventMouseButton:
 			if ev.button_index == BUTTON_LEFT && ev.doubleclick:
@@ -30,11 +30,16 @@ class GradientCursor:
 	func set_color(c):
 		color = c
 		get_parent().update_value()
-
+	
 	static func sort(a, b):
 		if a.get_position() < b.get_position():
 			return true
 		return false
+	
+	func _draw():
+		var c = color
+		c.a = 1.0
+		draw_rect(Rect2(0, 0, rect_size.x, rect_size.y), c, false)
 
 var value = null setget set_value
 
@@ -49,7 +54,7 @@ func _ready():
 func set_value(v):
 	value = v
 	for c in get_children():
-		if c != $Gradient:
+		if c != $Gradient && c != $Background:
 			remove_child(c)
 			c.free()
 	for p in value.points:
@@ -59,7 +64,7 @@ func set_value(v):
 func update_value():
 	value.clear()
 	for p in get_children():
-		if p != $Gradient:
+		if p != $Gradient && p != $Background:
 			value.add_point(p.rect_position.x/(rect_size.x-GradientCursor.WIDTH), p.color)
 	update_shader()
 
@@ -94,6 +99,7 @@ func _on_Popup_popup_hide():
 func get_sorted_cursors():
 	var array = get_children()
 	array.erase($Gradient)
+	array.erase($Background)
 	array.sort_custom(GradientCursor, "sort")
 	return array
 
@@ -104,6 +110,6 @@ func update_shader():
 	var shader
 	shader  = "shader_type canvas_item;\n"
 	shader += value.get_shader("gradient")
-	shader += "void fragment() { COLOR = vec4(gradient(UV.x), 1.0); }"
+	shader += "void fragment() { COLOR = gradient(UV.x); }"
 	$Gradient.material.shader.set_code(shader)
 	emit_signal("updated", value)
diff --git a/addons/material_maker/widgets/gradient_editor.tscn b/addons/material_maker/widgets/gradient_editor.tscn
index 7a2b5f3..ee0fe5d 100644
--- a/addons/material_maker/widgets/gradient_editor.tscn
+++ b/addons/material_maker/widgets/gradient_editor.tscn
@@ -1,26 +1,42 @@
-[gd_scene load_steps=4 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://addons/material_maker/widgets/gradient_editor.gd" type="Script" id=1]
 
+[sub_resource type="Shader" id=3]
+
+code = "shader_type canvas_item;
+
+void fragment() {
+	COLOR = vec4(vec3(2.0*fract(0.5*(floor(10.0*UV.x)+floor(2.0*UV.y)))), 1.0);
+}"
+
+[sub_resource type="ShaderMaterial" id=4]
+
+render_priority = 0
+shader = SubResource( 3 )
+
 [sub_resource type="Shader" id=1]
 
 code = "shader_type canvas_item;
-vec3 gradient(float x) {
+vec4 gradient(float x) {
   if (x < 0.000000000) {
-    return vec3(0.000000000,0.000000000,0.000000000);
+    return vec4(0.000000000,0.000000000,0.000000000,0.000000000);
   } else if (x < 1.000000000) {
-    return vec3(0.000000000,0.000000000,0.000000000)+x*vec3(1.000000000,1.000000000,1.000000000);
+    return vec4(0.000000000,0.000000000,0.000000000,0.000000000)+x*vec4(1.000000000,1.000000000,1.000000000,1.000000000);
   }
-  return vec3(1.000000000,1.000000000,1.000000000);
+  return vec4(1.000000000,1.000000000,1.000000000,1.000000000);
 }
-void fragment() { COLOR = vec4(gradient((UV.x-0.041666667)*1.090909091), 1.0); }"
+void fragment() { COLOR = gradient(UV.x); }"
 
 [sub_resource type="ShaderMaterial" id=2]
 
 render_priority = 0
 shader = SubResource( 1 )
 
-[node name="Control" type="Control" index="0"]
+[sub_resource type="Theme" id=5]
+
+
+[node name="Control" type="Control"]
 
 anchor_left = 0.0
 anchor_top = 0.0
@@ -38,9 +54,9 @@ size_flags_vertical = 1
 script = ExtResource( 1 )
 _sections_unfolded = [ "Rect" ]
 
-[node name="Gradient" type="ColorRect" parent="." index="0"]
+[node name="Background" type="ColorRect" parent="." index="0"]
 
-material = SubResource( 2 )
+material = SubResource( 4 )
 anchor_left = 0.0
 anchor_top = 0.0
 anchor_right = 0.0
@@ -57,6 +73,26 @@ size_flags_vertical = 1
 color = Color( 1, 1, 1, 1 )
 _sections_unfolded = [ "Material", "Rect" ]
 
+[node name="Gradient" type="ColorRect" parent="." index="1"]
+
+material = SubResource( 2 )
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 0.0
+anchor_bottom = 0.0
+margin_right = 120.0
+margin_bottom = 20.0
+rect_min_size = Vector2( 120, 20 )
+rect_pivot_offset = Vector2( 0, 0 )
+rect_clip_content = false
+mouse_filter = 0
+mouse_default_cursor_shape = 0
+size_flags_horizontal = 1
+size_flags_vertical = 1
+theme = SubResource( 5 )
+color = Color( 1, 1, 1, 1 )
+_sections_unfolded = [ "Material", "Theme" ]
+
 [node name="Popup" type="Popup" parent="Gradient" index="0"]
 
 visible = false
@@ -95,7 +131,7 @@ size_flags_horizontal = 1
 size_flags_vertical = 1
 alignment = 0
 color = Color( 1, 1, 1, 1 )
-edit_alpha = false
+edit_alpha = true
 raw_mode = false
 _sections_unfolded = [ "Rect" ]