use the slider to find a base color, then press space to generate a random three-color color scheme. press space to hide the color scheme and make a new one. YUS!!!! MATHY PURTINESS!!!! this isn't too advanced, but it works! you can also use the left and right arrow keys to change the color :P
credit to @mikeono102 for inspiration. mine is quicker to use but his generates more colors. i would check his out: http://scratch.mit.edu/projects/19425033/