One of the best utilities around, especially for ZZT art purposes. BlinkX substitutes blinking colors for bright colored foregrounds on bright colored backgrounds, and dark colored foregrounds on bright colored backgrounds, which uprades standard STK colors and allows you even more color combinations!
All you need to do to enable it in your game is put the included BlinkX.com file in your game's directory, and make a batch file to install it to your game, like you would a font. Dr. Dos has written a user article with a more detailed explination on how to use BlinkX. You can also enable BlinkX in the standard ZZT editor, ZZTAE, and KevEdit as well.
Now you can create virtually any scene with these colors, allowing a tasteful ZZT experience.