Impossible   Time   Colors 

Impossible Time Colors - An Up To 4-fold Impossible Time Color Generator

Choose up to 4 colors and alternate between them by time. You can choose hard and soft flickering modes, the amount of time colors for each side, the alternation speed, and the point size if you're unable to cross your eyes to overlap bigger dots without your vision becoming blurry. If you can't choose any color then just randomize them via the "Random" buttons.