Press space to create a clone of the orb. Then, you can mix and match the orbz to make new colors by dragging them. Press the up arrow key to change the backdrop's color and click the stage to make it white. NEW FEATURE: Now there are 4 songs! Click the speaker for the next one! You have to wait for the current song to end tho... You can also now turn down or turn up the music with the left and right arrows.
Thank you to juicykiwi and others The orbs are rainbow now! You can still mix the colors, but it won't stay the same for too long! While dragging the orbs, they might turn yellow. When placed down, they're back to their rainbow selves.