CURRENT (HOSED)   allows the user to paint with a spray of ROYGBV pictures, a handful of images for each color; in-betweens, such as reddish-orange, are created by dithering. Switch on/off the voltage by clicking on the +5V supply switch. Reset the picture canvas with Space or Return.

It was so sad to see electronics components spread out on the canvas, all suggestive of electrical functionality, circuitry, and blinky lights -- and then to be denied any taste of it. Therefore:

The drawing applet.
The drawing applet source.
E'beth's index E'beth's index screen capture