diff --git a/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs b/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
index abc45d82ec..8c896646bf 100644
--- a/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
+++ b/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
@@ -14,7 +14,7 @@ namespace osu.Desktop.Beatmaps.IO
     {
         public static void Register() => AddReader<LegacyFilesystemReader>((storage, path) => Directory.Exists(path));
 
-        private string basePath { get; }
+        private readonly string basePath;
 
         public LegacyFilesystemReader(string path)
         {
diff --git a/osu.Game/Beatmaps/Formats/BeatmapDecoder.cs b/osu.Game/Beatmaps/Formats/BeatmapDecoder.cs
index cc9d367a59..21a3ab9842 100644
--- a/osu.Game/Beatmaps/Formats/BeatmapDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/BeatmapDecoder.cs
@@ -11,7 +11,7 @@ namespace osu.Game.Beatmaps.Formats
 {
     public abstract class BeatmapDecoder
     {
-        private static Dictionary<string, Type> decoders { get; } = new Dictionary<string, Type>();
+        private static readonly Dictionary<string, Type> decoders = new Dictionary<string, Type>();
 
         public static BeatmapDecoder GetDecoder(StreamReader stream)
         {
diff --git a/osu.Game/Beatmaps/IO/ArchiveReader.cs b/osu.Game/Beatmaps/IO/ArchiveReader.cs
index 6c6b6be23c..9245c914a6 100644
--- a/osu.Game/Beatmaps/IO/ArchiveReader.cs
+++ b/osu.Game/Beatmaps/IO/ArchiveReader.cs
@@ -13,11 +13,11 @@ namespace osu.Game.Beatmaps.IO
     {
         private class Reader
         {
-            public Func<Storage, string, bool> Test { get; set; }
-            public Type Type { get; set; }
+            public Func<Storage, string, bool> Test;
+            public Type Type;
         }
 
-        private static List<Reader> readers { get; } = new List<Reader>();
+        private static readonly List<Reader> readers = new List<Reader>();
 
         public static ArchiveReader GetReader(Storage storage, string path)
         {
diff --git a/osu.Game/Graphics/OsuColour.cs b/osu.Game/Graphics/OsuColour.cs
index 15ffefc45d..b666442f19 100644
--- a/osu.Game/Graphics/OsuColour.cs
+++ b/osu.Game/Graphics/OsuColour.cs
@@ -33,57 +33,57 @@ namespace osu.Game.Graphics
         }
 
         // See https://github.com/ppy/osu-web/blob/master/resources/assets/less/colors.less
-        public Color4 PurpleLighter = FromHex(@"eeeeff");
-        public Color4 PurpleLight = FromHex(@"aa88ff");
-        public Color4 Purple = FromHex(@"8866ee");
-        public Color4 PurpleDark = FromHex(@"6644cc");
-        public Color4 PurpleDarker = FromHex(@"441188");
+        public readonly Color4 PurpleLighter = FromHex(@"eeeeff");
+        public readonly Color4 PurpleLight = FromHex(@"aa88ff");
+        public readonly Color4 Purple = FromHex(@"8866ee");
+        public readonly Color4 PurpleDark = FromHex(@"6644cc");
+        public readonly Color4 PurpleDarker = FromHex(@"441188");
 
-        public Color4 PinkLighter = FromHex(@"ffddee");
-        public Color4 PinkLight = FromHex(@"ff99cc");
-        public Color4 Pink = FromHex(@"ff66aa");
-        public Color4 PinkDark = FromHex(@"cc5288");
-        public Color4 PinkDarker = FromHex(@"bb1177");
+        public readonly Color4 PinkLighter = FromHex(@"ffddee");
+        public readonly Color4 PinkLight = FromHex(@"ff99cc");
+        public readonly Color4 Pink = FromHex(@"ff66aa");
+        public readonly Color4 PinkDark = FromHex(@"cc5288");
+        public readonly Color4 PinkDarker = FromHex(@"bb1177");
 
-        public Color4 BlueLighter = FromHex(@"ddffff");
-        public Color4 BlueLight = FromHex(@"99eeff");
-        public Color4 Blue = FromHex(@"66ccff");
-        public Color4 BlueDark = FromHex(@"44aadd");
-        public Color4 BlueDarker = FromHex(@"2299bb");
+        public readonly Color4 BlueLighter = FromHex(@"ddffff");
+        public readonly Color4 BlueLight = FromHex(@"99eeff");
+        public readonly Color4 Blue = FromHex(@"66ccff");
+        public readonly Color4 BlueDark = FromHex(@"44aadd");
+        public readonly Color4 BlueDarker = FromHex(@"2299bb");
 
-        public Color4 YellowLighter = FromHex(@"ffffdd");
-        public Color4 YellowLight = FromHex(@"ffdd55");
-        public Color4 Yellow = FromHex(@"ffcc22");
-        public Color4 YellowDark = FromHex(@"eeaa00");
-        public Color4 YellowDarker = FromHex(@"cc6600");
+        public readonly Color4 YellowLighter = FromHex(@"ffffdd");
+        public readonly Color4 YellowLight = FromHex(@"ffdd55");
+        public readonly Color4 Yellow = FromHex(@"ffcc22");
+        public readonly Color4 YellowDark = FromHex(@"eeaa00");
+        public readonly Color4 YellowDarker = FromHex(@"cc6600");
 
-        public Color4 GreenLighter = FromHex(@"eeffcc");
-        public Color4 GreenLight = FromHex(@"b3d944");
-        public Color4 Green = FromHex(@"88b300");
-        public Color4 GreenDark = FromHex(@"668800");
-        public Color4 GreenDarker = FromHex(@"445500");
+        public readonly Color4 GreenLighter = FromHex(@"eeffcc");
+        public readonly Color4 GreenLight = FromHex(@"b3d944");
+        public readonly Color4 Green = FromHex(@"88b300");
+        public readonly Color4 GreenDark = FromHex(@"668800");
+        public readonly Color4 GreenDarker = FromHex(@"445500");
 
-        public Color4 Gray0 = FromHex(@"000");
-        public Color4 Gray1 = FromHex(@"111");
-        public Color4 Gray2 = FromHex(@"222");
-        public Color4 Gray3 = FromHex(@"333");
-        public Color4 Gray4 = FromHex(@"444");
-        public Color4 Gray5 = FromHex(@"555");
-        public Color4 Gray6 = FromHex(@"666");
-        public Color4 Gray7 = FromHex(@"777");
-        public Color4 Gray8 = FromHex(@"888");
-        public Color4 Gray9 = FromHex(@"999");
-        public Color4 GrayA = FromHex(@"aaa");
-        public Color4 GrayB = FromHex(@"bbb");
-        public Color4 GrayC = FromHex(@"ccc");
-        public Color4 GrayD = FromHex(@"ddd");
-        public Color4 GrayE = FromHex(@"eee");
-        public Color4 GrayF = FromHex(@"fff");
+        public readonly Color4 Gray0 = FromHex(@"000");
+        public readonly Color4 Gray1 = FromHex(@"111");
+        public readonly Color4 Gray2 = FromHex(@"222");
+        public readonly Color4 Gray3 = FromHex(@"333");
+        public readonly Color4 Gray4 = FromHex(@"444");
+        public readonly Color4 Gray5 = FromHex(@"555");
+        public readonly Color4 Gray6 = FromHex(@"666");
+        public readonly Color4 Gray7 = FromHex(@"777");
+        public readonly Color4 Gray8 = FromHex(@"888");
+        public readonly Color4 Gray9 = FromHex(@"999");
+        public readonly Color4 GrayA = FromHex(@"aaa");
+        public readonly Color4 GrayB = FromHex(@"bbb");
+        public readonly Color4 GrayC = FromHex(@"ccc");
+        public readonly Color4 GrayD = FromHex(@"ddd");
+        public readonly Color4 GrayE = FromHex(@"eee");
+        public readonly Color4 GrayF = FromHex(@"fff");
 
-        public Color4 RedLighter = FromHex(@"ffeded");
-        public Color4 RedLight = FromHex(@"ed7787");
-        public Color4 Red = FromHex(@"ed1121");
-        public Color4 RedDark = FromHex(@"ba0011");
-        public Color4 RedDarker = FromHex(@"870000");
+        public readonly Color4 RedLighter = FromHex(@"ffeded");
+        public readonly Color4 RedLight = FromHex(@"ed7787");
+        public readonly Color4 Red = FromHex(@"ed1121");
+        public readonly Color4 RedDark = FromHex(@"ba0011");
+        public readonly Color4 RedDarker = FromHex(@"870000");
     }
 }
diff --git a/osu.Game/Online/Chat/Channel.cs b/osu.Game/Online/Chat/Channel.cs
index 04ebf0a389..d3bd57a1c9 100644
--- a/osu.Game/Online/Chat/Channel.cs
+++ b/osu.Game/Online/Chat/Channel.cs
@@ -23,7 +23,7 @@ namespace osu.Game.Online.Chat
         [JsonProperty(@"channel_id")]
         public int Id;
 
-        public SortedList<Message> Messages = new SortedList<Message>((m1, m2) => m1.Id.CompareTo(m2.Id));
+        public readonly SortedList<Message> Messages = new SortedList<Message>((m1, m2) => m1.Id.CompareTo(m2.Id));
 
         //internal bool Joined;
 
diff --git a/osu.Game/Overlays/Mods/ModButton.cs b/osu.Game/Overlays/Mods/ModButton.cs
index f380c19d8a..d7a91e2caa 100644
--- a/osu.Game/Overlays/Mods/ModButton.cs
+++ b/osu.Game/Overlays/Mods/ModButton.cs
@@ -21,7 +21,7 @@ namespace osu.Game.Overlays.Mods
 {
     public class ModButton : FillFlowContainer
     {
-        private ModIcon foregroundIcon { get; set; }
+        private ModIcon foregroundIcon;
         private readonly SpriteText text;
         private readonly Container<ModIcon> iconsContainer;
         private SampleChannel sampleOn, sampleOff;
diff --git a/osu.Game/Screens/Menu/OsuLogo.cs b/osu.Game/Screens/Menu/OsuLogo.cs
index 29f6cb2967..f3fffedd43 100644
--- a/osu.Game/Screens/Menu/OsuLogo.cs
+++ b/osu.Game/Screens/Menu/OsuLogo.cs
@@ -22,7 +22,7 @@ namespace osu.Game.Screens.Menu
     /// </summary>
     public class OsuLogo : Container
     {
-        public Color4 OsuPink = OsuColour.FromHex(@"e967a1");
+        public readonly Color4 OsuPink = OsuColour.FromHex(@"e967a1");
 
         private readonly Sprite logo;
         private readonly CircularContainer logoContainer;