Tried to make the mute and back buttons less intrusive

HUD.tscn

@@ -1,9 +1,10 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://HUD.gd" type="Script" id=1]
 [ext_resource path="res://assets/fonts/monogram.tres" type="DynamicFont" id=2]
 [ext_resource path="res://assets/ui/close.png" type="Texture" id=3]
 [ext_resource path="res://assets/ui/mute.png" type="Texture" id=4]
+[ext_resource path="res://ui/TransparentButton.gd" type="Script" id=5]
 
 [node name="HUD" type="CanvasLayer"]
 script = ExtResource( 1 )
@@ -21,27 +22,30 @@ align = 1
 visible = false
 anchor_left = 1.0
 anchor_right = 1.0
-margin_left = -44.0
+margin_left = -30.0
 margin_top = 2.0
 margin_right = -2.0
-margin_bottom = 38.0
+margin_bottom = 30.0
 focus_mode = 0
-custom_fonts/font = ExtResource( 2 )
 enabled_focus_mode = 0
 icon = ExtResource( 3 )
+clip_text = true
+script = ExtResource( 5 )
 __meta__ = {
 "_edit_use_anchors_": false
 }
 
 [node name="MuteButton" type="Button" parent="."]
 margin_left = 2.0
 margin_top = 2.0
-margin_right = 44.0
-margin_bottom = 38.0
+margin_right = 30.0
+margin_bottom = 30.0
 focus_mode = 0
 toggle_mode = true
 enabled_focus_mode = 0
 icon = ExtResource( 4 )
+clip_text = true
+script = ExtResource( 5 )
 __meta__ = {
 "_edit_use_anchors_": false
 }

ui/TransparentButton.gd

@@ -0,0 +1,16 @@
+extends Button
+
+onready var original_modulate = modulate
+
+export (float) var transparency := 0.75
+
+func _ready() -> void:
+	self.connect("mouse_entered", self, "_on_mouse_entered")
+	self.connect("mouse_exited", self, "_on_mouse_exited")
+	_on_mouse_exited()
+
+func _on_mouse_entered() -> void:
+	modulate = original_modulate
+
+func _on_mouse_exited() -> void:
+	modulate.a = transparency