diff --git a/HellionChat/Util/ColourUtil.cs b/HellionChat/Util/ColourUtil.cs
index d888e09..7d01903 100755
--- a/HellionChat/Util/ColourUtil.cs
+++ b/HellionChat/Util/ColourUtil.cs
@@ -66,8 +66,23 @@ internal static class ColourUtil
         );
     }
 
+    // ---------------------------------------------------------------
+    // Cherry-picked from ChatTwo upstream a51789b + 5b58513 (Infiziert90,
+    // 2026-06-12). Both guards belong together -- a51789b alone turns a zero
+    // colour into opaque black, which then slips past the invisible-text
+    // guard in ChunkUtil and paints over the inherited colour.
+    // TEST-MIRROR: ../../../Hellion Build test/Util/ColourUtilTests.cs
+    // ---------------------------------------------------------------
     public static unsafe uint ArgbToRgba(uint x)
     {
+        if (x == 0)
+            return 0;
+
+        // The game omits the alpha byte on some GlobalValue colours, and the
+        // swap below would leave alpha at 0 -- invisible text.
+        if (x <= 0x00FFFFFFu)
+            x |= 0xFF000000u;
+
         var buf = (byte*)&x;
         (buf[1], buf[2], buf[3], buf[0]) = (buf[0], buf[1], buf[2], buf[3]);
         return x;