You're missing the point. This is the festival of inappropriate technology. If you take your little tri-color prism and mount it end on, on a stepper motor with

You're missing the point. This is the festival of inappropriate technology. If you take your little tri-color prism and mount it end on, on a stepper motor with an optical sensor to detect which color is facing in the signal direction; then you're talking. Extra points for if it: a. has an ethernet port b. reads rss feeds or email