use keys 1-9 9 is a eraser up arow / down arow to change size. or right / left arows to change the size faster. press key 0 for rainbow. press c to clear all, press u to stop drawing and d to draw again. press r to glide to random position. hold space to do something cool. m to turn music off. l makes a random shape.
i found a fun thing go on rainbow then make it biger for a couple seconds than smaller for a couple seconds. hold r or space and move your mouse. rambow is my favorite for this if you find any new tricks tell me! all my own work.