Panning algorithm

[jgannon]

I'm working on a way to make the camera pan around until it finds green, because if the target is just out of its range of view, it continues looking straight ahead. The problem that I've run into is that when I manually set the servos, it disables the automatic tracking, and it's really inefficient to repeatedly switch between automatic and manual modes. Has anybody written an effective algorithm for panning to find a color?