Add OsuButton with sane defaults

osu.Game/Graphics/UserInterface/OsuButton.cs

@@ -0,0 +1,15 @@
+using System;
+using OpenTK.Graphics;
+using osu.Framework.Graphics.UserInterface;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public class OsuButton : Button
+    {
+        public OsuButton()
+        {
+            Height = 25;
+            Colour = new Color4(14, 132, 165, 255);
+        }
+    }
+}

osu.Game/Overlays/Options/GraphicsOptions.cs

@@ -0,0 +1,12 @@
+using System;
+namespace osu.Game.Overlays.Options
+{
+    public class GraphicsOptions : OptionsSection
+    {
+        public GraphicsOptions()
+        {
+            Header = "Graphics";
+        }
+    }
+}
+

osu.Game/Overlays/Options/LoginOptions.cs

@@ -5,6 +5,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
+using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 
 namespace osu.Game.Overlays.Options
@@ -53,7 +54,7 @@ namespace osu.Game.Overlays.Options
                 new TextBox { Height = 20, RelativeSizeAxes = Axes.X },
                 new SpriteText { Text = "Password" },
                 new TextBox { Height = 20, RelativeSizeAxes = Axes.X },
-                new Button
+                new OsuButton
                 {
                     RelativeSizeAxes = Axes.X,
                     Text = "Log in",

osu.Game/Overlays/Options/UpdateOptions.cs

@@ -4,6 +4,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Platform;
+using osu.Game.Graphics.UserInterface;
 
 namespace osu.Game.Overlays.Options
 {
@@ -16,7 +17,7 @@ namespace osu.Game.Overlays.Options
             {
                 new SpriteText { Text = "TODO: Dropdown" },
                 new SpriteText { Text = "Your osu! is up to date" }, // TODO: map this to reality
-                new Button
+                new OsuButton
                 {
                     RelativeSizeAxes = Axes.X,
                     Text = "Open osu! folder",

osu.Game/osu.Game.csproj

@@ -200,6 +200,8 @@
     <Compile Include="Overlays\Options\GeneralOptions.cs" />
     <Compile Include="Overlays\Options\LanguageOptions.cs" />
     <Compile Include="Overlays\Options\UpdateOptions.cs" />
+    <Compile Include="Overlays\Options\GraphicsOptions.cs" />
+    <Compile Include="Graphics\UserInterface\OsuButton.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="$(SolutionDir)\osu-framework\osu.Framework\osu.Framework.csproj">