diff --git a/HellionChat/Themes/Builtin/Chat2Classic.cs b/HellionChat/Themes/Builtin/Chat2Classic.cs
new file mode 100644
index 0000000..f0ba9e8
--- /dev/null
+++ b/HellionChat/Themes/Builtin/Chat2Classic.cs
@@ -0,0 +1,50 @@
+using HellionChat.Util;
+
+namespace HellionChat.Themes.Builtin;
+
+internal static class Chat2Classic
+{
+    public const string Slug = "chat2-classic";
+
+    public static Theme Build() => new(
+        Slug: Slug,
+        Name: "Chat 2 Klassik",
+        Author: "Upstream (Infi & Anna)",
+        Description: "Steel-blue accents on neutral dark grey, eckige Kanten. Vertraut für ChatTwo-Veteranen.",
+        Colors: new ThemeColors(
+            PrimaryDark:    ColourUtil.HexToRgba("#3D6E92"),
+            Primary:        ColourUtil.HexToRgba("#4682B4"),
+            PrimaryLight:   ColourUtil.HexToRgba("#5C9DC8"),
+            PrimaryGlow:    ColourUtil.HexToRgba("#4682B466"),
+
+            AccentDark:     ColourUtil.HexToRgba("#3D6E92"),
+            Accent:         ColourUtil.HexToRgba("#4682B4"),
+            AccentLight:    ColourUtil.HexToRgba("#5C9DC8"),
+
+            Identity:       ColourUtil.HexToRgba("#4682B4"),
+
+            WindowBg:       ColourUtil.HexToRgba("#0F0F0FF2"),
+            ChildBg:        ColourUtil.HexToRgba("#141414"),
+            FrameBg:        ColourUtil.HexToRgba("#1A1A1A"),
+            Surface:        ColourUtil.HexToRgba("#202020"),
+            SurfaceHover:   ColourUtil.HexToRgba("#2C2C2C"),
+            Border:         ColourUtil.HexToRgba("#404040"),
+
+            TextPrimary:    ColourUtil.HexToRgba("#E6E6E6"),
+            TextMuted:      ColourUtil.HexToRgba("#999999"),
+            TextDim:        ColourUtil.HexToRgba("#666666"),
+
+            StatusSuccess:  ColourUtil.HexToRgba("#5CB85C"),
+            StatusDanger:   ColourUtil.HexToRgba("#D9534F"),
+            StatusWarning:  ColourUtil.HexToRgba("#F0AD4E"),
+            StatusInfo:     ColourUtil.HexToRgba("#4682B4")
+        ),
+        Layout: new ThemeLayout(
+            WindowRounding: 0f, ChildRounding: 0f, PopupRounding: 0f,
+            FrameRounding: 0f, GrabRounding: 0f, TabRounding: 0f,
+            ScrollbarRounding: 0f, WindowBorderSize: 1f, FrameBorderSize: 1f
+        ),
+        Typography: new ThemeTypography(),
+        IsBuiltIn: true
+    );
+}