colorfull chat system

# Conflicts:
#	Content.Server/Chat/Systems/ChatSystem.cs

Content.Server/Chat/RainbowChatSystem.cs

@@ -0,0 +1,51 @@
+using Content.Server.Chat.Systems;
+using Content.Shared.Humanoid;
+
+namespace Content.Server.Chat;
+
+public sealed class RainbowChatSystem : EntitySystem
+{
+    public Dictionary<string, string> NameToColor = new();
+
+    private const float MinSaturation = 0.22f;
+    private const float MaxSaturation = 0.30f;
+    private const float MinValue = 0.70f;
+    private const float MaxValue = 0.80f;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<HumanoidAppearanceComponent, SetSpeakerColorEvent>(OnHumanoidSpeak);
+    }
+
+    private void OnHumanoidSpeak(EntityUid uid, HumanoidAppearanceComponent component, SetSpeakerColorEvent args)
+    {
+        var color = GetColor(args.Name);
+        args.Name = $"[color={color}]{args.Name}[/color]";
+    }
+
+    private string GetColor(string characterName)
+    {
+        if (NameToColor.TryGetValue(characterName, out var hexColor))
+            return hexColor;
+
+        return CreateCharacterHexColor(characterName);
+    }
+
+    private string CreateCharacterHexColor(string characterName)
+    {
+        var random = new Random(characterName.GetHashCode());
+        var h = GetRandomFloat(ref random,0f,1f);
+        var s = GetRandomFloat(ref random, MinSaturation, MaxSaturation);
+        var v = GetRandomFloat(ref random,MinValue, MaxValue);
+
+        var color = Color.FromHsv(new Vector4(h, s, v, 1)).ToHex();
+        NameToColor[characterName] = color;
+        return color;
+    }
+
+    private float GetRandomFloat(ref Random random, float minimum, float maximum)
+    {
+        return (float)(random.NextDouble() * (maximum - minimum) + minimum);
+    }
+}