Light Bright led board with rgb leds

I want to use rgb leds and be able to select a color then light each led with that color. To select the leds etc, I want to use a sensor on a stylus to touch a pad of leds lit to the avail colors and touch the led on the main screen. Would be cool to have a save option for the pictures made to an sd card. If I manage this crazy thing, I will share it. If anyone has been working on this idea I would love to know how far you got. Thanks