Use plum colour scheme in multiplayer to match rest of multiplayer screens

osu.Game.Tests/Visual/UserInterface/TestSceneShearedOverlayContainer.cs

@@ -66,7 +66,10 @@ namespace osu.Game.Tests.Visual.UserInterface
 
         public class TestShearedOverlayContainer : ShearedOverlayContainer
         {
-            protected override OverlayColourScheme ColourScheme => OverlayColourScheme.Green;
+            public TestShearedOverlayContainer()
+                : base(OverlayColourScheme.Green)
+            {
+            }
 
             [BackgroundDependencyLoader]
             private void load()

osu.Game/Overlays/FirstRunSetupOverlay.cs

@@ -31,8 +31,6 @@ namespace osu.Game.Overlays
     [Cached]
     public class FirstRunSetupOverlay : ShearedOverlayContainer
     {
-        protected override OverlayColourScheme ColourScheme => OverlayColourScheme.Purple;
-
         [Resolved]
         private IPerformFromScreenRunner performer { get; set; } = null!;
 
@@ -70,6 +68,11 @@ namespace osu.Game.Overlays
 
         private Container content = null!;
 
+        public FirstRunSetupOverlay()
+            : base(OverlayColourScheme.Purple)
+        {
+        }
+
         [BackgroundDependencyLoader]
         private void load(OsuColour colours)
         {

osu.Game/Overlays/Mods/ModSelectScreen.cs

@@ -27,8 +27,6 @@ namespace osu.Game.Overlays.Mods
 {
     public abstract class ModSelectScreen : ShearedOverlayContainer
     {
-        protected override OverlayColourScheme ColourScheme => OverlayColourScheme.Green;
-
         [Cached]
         public Bindable<IReadOnlyList<Mod>> SelectedMods { get; private set; } = new Bindable<IReadOnlyList<Mod>>(Array.Empty<Mod>());
 
@@ -65,6 +63,11 @@ namespace osu.Game.Overlays.Mods
         private ColumnScrollContainer columnScroll = null!;
         private ColumnFlowContainer columnFlow = null!;
 
+        protected ModSelectScreen(OverlayColourScheme colourScheme = OverlayColourScheme.Green)
+            : base(colourScheme)
+        {
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {

osu.Game/Overlays/Mods/ShearedOverlayContainer.cs

@@ -51,17 +51,15 @@ namespace osu.Game.Overlays.Mods
         /// </summary>
         protected Container FooterContent { get; private set; }
 
-        protected abstract OverlayColourScheme ColourScheme { get; }
-
         protected override bool StartHidden => true;
 
         protected override bool BlockNonPositionalInput => true;
 
-        protected ShearedOverlayContainer()
+        protected ShearedOverlayContainer(OverlayColourScheme colourScheme)
         {
             RelativeSizeAxes = Axes.Both;
 
-            ColourProvider = new OverlayColourProvider(ColourScheme);
+            ColourProvider = new OverlayColourProvider(colourScheme);
         }
 
         [BackgroundDependencyLoader]

osu.Game/Overlays/Mods/UserModSelectScreen.cs

@@ -12,6 +12,11 @@ namespace osu.Game.Overlays.Mods
 {
     public class UserModSelectScreen : ModSelectScreen
     {
+        public UserModSelectScreen(OverlayColourScheme colourScheme = OverlayColourScheme.Green)
+            : base(colourScheme)
+        {
+        }
+
         protected override ModColumn CreateModColumn(ModType modType, Key[] toggleKeys = null) => new UserModColumn(modType, false, toggleKeys);
 
         protected override IReadOnlyList<Mod> ComputeNewModsFromSelection(IReadOnlyList<Mod> oldSelection, IReadOnlyList<Mod> newSelection)

osu.Game/Screens/OnlinePlay/FreeModSelectScreen.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets.Mods;
 using osuTK.Input;
@@ -20,6 +21,7 @@ namespace osu.Game.Screens.OnlinePlay
         }
 
         public FreeModSelectScreen()
+            : base(OverlayColourScheme.Plum)
         {
             IsValidMod = _ => true;
         }

osu.Game/Screens/OnlinePlay/OnlinePlaySongSelect.cs

@@ -14,6 +14,7 @@ using osu.Framework.Screens;
 using osu.Game.Beatmaps;
 using osu.Game.Online.API;
 using osu.Game.Online.Rooms;
+using osu.Game.Overlays;
 using osu.Game.Overlays.Mods;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
@@ -153,7 +154,7 @@ namespace osu.Game.Screens.OnlinePlay
             return base.OnExiting(e);
         }
 
-        protected override ModSelectScreen CreateModSelectOverlay() => new UserModSelectScreen
+        protected override ModSelectScreen CreateModSelectOverlay() => new UserModSelectScreen(OverlayColourScheme.Plum)
         {
             IsValidMod = IsValidMod
         };