This is probably really easy, but how can I make a mesh have a coloured glow effect around it. Initially it will be a sphere, but that sphere will deform over time, but I still want it to be able to switch between a blue glow and a red Glow.

Would the Radial Blur effect from Nehe ( http://nehe.gamedev.net/data/lessons....asp?lesson=36 ), be ok or is that too CPU intensive?