FarbVélo

@gabriela_trueba1 yes there is some color theory involved: The hue's are picked at randomly 60° distance from each other on the color wheel by default. (This can be changed in the settings). So every time you "re-roll" you get a random color harmony (Complementary, Analogous, Split-Complementary etc...). One of those colors will be made very dark and one very bright, the colors in between have a controlled random lightness ramp applied to it. I have implemented a full Random version. (you can check it out in the settings under "Randomizer Engine" > Full Random). Hope this answers your question

@jake_tran In fact I added it today, along with a few other color models. Check out "Color Mode" in the settings