Add Driver for HSV Color???

Anyone know if there’s a way to add a driver for HSV color in Blender? If not in the UI, maybe with Python?

Blender only seems to let me insert keyframes and drivers for RGB color, and the RGB colors are the only color values that have python integration. Is there any way to work around this issue?

Also, I’m currently using Blender 2.70 – has the issue maybe been fixed in a more recent version?