diff --git a/src/Preferences/HandleThemes.gd b/src/Preferences/HandleThemes.gd
index 8c0c947ad..da8d78a7d 100644
--- a/src/Preferences/HandleThemes.gd
+++ b/src/Preferences/HandleThemes.gd
@@ -78,6 +78,10 @@ func change_theme(ID : int) -> void:
 	Global.control.theme.default_font = font
 	Global.default_clear_color = main_theme.get_stylebox("panel", "PanelContainer").bg_color
 	VisualServer.set_default_clear_color(Color(Global.default_clear_color))
+	if Global.control.get_node_or_null("AlternateTransparentBackground"): #also change color of AlternateTransparentBackground as well "if it exists"
+		var new_color = Global.default_clear_color
+		new_color.a = Global.control.get_node("AlternateTransparentBackground").color.a
+		Global.control.get_node("AlternateTransparentBackground").color = new_color
 
 	(Global.animation_timeline.get_stylebox("panel", "Panel") as StyleBoxFlat).bg_color = main_theme.get_stylebox("panel", "Panel").bg_color
 	var fake_vsplit_grabber : TextureRect = Global.animation_timeline.find_node("FakeVSplitContainerGrabber")
diff --git a/src/UI/TopMenuContainer.gd b/src/UI/TopMenuContainer.gd
index 154bc74d8..3597fd7ee 100644
--- a/src/UI/TopMenuContainer.gd
+++ b/src/UI/TopMenuContainer.gd
@@ -367,8 +367,8 @@ func window_transparency(value :float) -> void:
 		get_node("../../AlternateTransparentBackground").visible = false
 	else:
 		get_node("../../AlternateTransparentBackground").visible = true
-	var checker :ColorRect = get_parent().get_node("UI/ToolsAndCanvas/CanvasAndTimeline/ViewportAndRulers/HSplitContainer/ViewportandVerticalRuler/ViewportContainer/Viewport/TransparentChecker")
-	var color :Color = Global.control.theme.get_stylebox("panel", "PanelContainer").bg_color
+	var checker :ColorRect = Global.transparent_checker
+	var color :Color = Global.default_clear_color
 	color.a = value
 	get_node("../../AlternateTransparentBackground").color = color
 	checker.transparency(value)