Remove the action toolbar.

osu.Game.Rulesets.Karaoke/Screens/Edit/Beatmaps/Lyrics/Content/Compose/Toolbar/KeyActionButton.cs

@@ -9,7 +9,7 @@ namespace osu.Game.Rulesets.Karaoke.Screens.Edit.Beatmaps.Lyrics.Content.Compose
 /// <summary>
 /// Button that able to receive the <see cref="KaraokeEditAction"/> event.
 /// </summary>
-public abstract partial class KeyActionButton : ActionButton, IKeyBindingHandler<KaraokeEditAction>, IHasIKeyBindingHandlerOrder
+public abstract partial class KeyActionButton : ToolbarButton, IKeyBindingHandler<KaraokeEditAction>, IHasIKeyBindingHandlerOrder
 {
     protected abstract KaraokeEditAction EditAction { get; }
 

osu.Game.Rulesets.Karaoke/Screens/Edit/Beatmaps/Lyrics/Content/Compose/Toolbar/ToolbarButton.cs

@@ -5,6 +5,8 @@
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
+using osu.Framework.Input.Events;
+using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osuTK;
 
@@ -15,47 +17,63 @@ namespace osu.Game.Rulesets.Karaoke.Screens.Edit.Beatmaps.Lyrics.Content.Compose
 /// </summary>
 public abstract partial class ToolbarButton : OsuClickableContainer
 {
-    public void SetIcon(Drawable icon)
-    {
-        Size = new Vector2(SpecialActionToolbar.HEIGHT);
-        IconContainer.Icon = icon;
-        IconContainer.Show();
-    }
-
     [Resolved]
     private TextureStore textures { get; set; } = null!;
 
-    public void SetIcon(string texture) =>
-        SetIcon(new Sprite
+    [Resolved]
+    private OsuColour colours { get; set; } = null!;
+
+    protected ConstrainedIconContainer IconContainer;
+
+    protected ToolbarButton()
+    {
+        Children = new Drawable[]
         {
-            Texture = textures.Get(texture),
-        });
+            IconContainer = new ConstrainedIconContainer
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Size = new Vector2(SpecialActionToolbar.ICON_SIZE),
+                Alpha = 0,
+            },
+        };
+    }
 
     public void SetIcon(IconUsage iconUsage) =>
         SetIcon(new SpriteIcon
         {
             Icon = iconUsage,
         });
 
+    public void SetIcon(Drawable icon)
+    {
+        Size = new Vector2(SpecialActionToolbar.HEIGHT);
+        IconContainer.Icon = icon;
+        IconContainer.Show();
+    }
+
     protected void SetState(bool enabled)
     {
         IconContainer.Icon.Alpha = enabled ? 1f : 0.5f;
         Enabled.Value = enabled;
     }
 
-    protected ConstrainedIconContainer IconContainer;
+    protected override bool OnClick(ClickEvent e)
+    {
+        ToggleClickEffect();
 
-    protected ToolbarButton()
+        return base.OnClick(e);
+    }
+
+    public void ToggleClickEffect()
     {
-        Children = new Drawable[]
+        if (Enabled.Value)
         {
-            IconContainer = new ConstrainedIconContainer
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                Size = new Vector2(SpecialActionToolbar.ICON_SIZE),
-                Alpha = 0,
-            },
-        };
+            IconContainer.FadeOut(100).Then().FadeIn();
+        }
+        else
+        {
+            IconContainer.FadeColour(colours.Red, 100).Then().FadeColour(Colour4.White);
+        }
     }
 }