I think it is last code update for 1.6

Author: en0tuk

.gradle/7.3.3/checksums/checksums.lock

@@ -5,18 +5,15 @@
 import ru.enis.ehidetags.Core;
 
 public class Color {
-    private static final LegacyComponentSerializer HexSerializer = LegacyComponentSerializer.builder().hexColors().useUnusualXRepeatedCharacterHexFormat().build();
-    private static final LegacyComponentSerializer AmpersandSerializer = LegacyComponentSerializer.builder().character('&').build();
+    private static final LegacyComponentSerializer LegacySerializer = LegacyComponentSerializer.legacyAmpersand();
+    private static final LegacyComponentSerializer HexSerializer = LegacySerializer.toBuilder().hexColors().useUnusualXRepeatedCharacterHexFormat().build();
 
     public static TextComponent ColorFormat(String translate){
         if (Core.majorMinecraftVersion() > 15) {
             return HexSerializer.deserialize(translate);
         } else {
-            return AmpersandSerializer.deserialize(translate);
+            return LegacySerializer.deserialize(translate);
 
         }
     }
-    /*
-     * Здесь будет поддержка HEX цветов
-     */
 }