You can click a part of AT94 to change it, or use keys. Q and E to change skin color, and A and D to change shirt color. Press r for it to generate a random AT94. One glitch I spotted with the shirt colors is that switching to a "monochrome" shirt color, then going back to get a "rainbow" shirt color will glitch. So, to get rainbow while your on monochrome, go back twice and you'll be on bronze, once you are on bronze, go forward one more time.
Once you create an AT94, you can use it for your projects if you want. This is just another resource for you Scratchers. Hope you like it!