Stoplight

A simple switch node that changes color from green to red as it's switched from 0 to 1.  Nothing major but good for instant visual feedback when using 2 input switches in the DAG.  Very handy when zooming around your script or getting ready to render and wanting to make sure switches are switched correctly at a glance.  Takes a little of the danger out of tossing in a switch for a heavy rendering node that you want to turn off temporarily, if you're not using the $gui string.  Things like that.  Sometimes the little things make a big difference!