R - Start rendering E - Random seed colour C - Choose your own seed colour based of a HSV code. To construct a hsv code, take each value of a hsv value (for scratch, which means everything is a range of 0-100) and fill the front with 0s until each value fits in a 3 char space. Example: 004056192 can be broken down to [004]hue [056]saturation [192]brightness aka value. Have fun!
The renderer works by drawing a 200x200 (default) image of complete randomness influenced by neighbouring pixels. every new pixel drawn is random, but before its drawn, the program checks either the pixel above or to the left with a coin flip and and then randomly subtracts or add to the colour using the deviation setting. This time, the values are set via a simple hsv encoding value.