RetroHexChat supports IRC-compatible text formatting with bold, italic, underline, colors, and more.
Methods
Toolbar: Use the formatting toolbar below the chat area (B, I, U, Color, Strip buttons).
Keyboard Shortcuts:
Ctrl+Shift+B — Bold Ctrl+Shift+Y — Italic Ctrl+Shift+U — Underline Ctrl+Shift+D — Color (opens color picker) Ctrl+Shift+V — Reverse Ctrl+Shift+X — Reset all formatting
Strip Formatting
Click the S button in the formatting toolbar to strip all formatting from incoming messages.