deconflicting namespaces

Hello,

I'm in the unfortunate position of needing to include a gem whose name
conflict with an existing class in my application. Specifically, I
already have a Color class, and I'm trying to add the Color (v1.4)
gem. Obviously these namespaces conflict.

Is there some magical way that I can wrap the Color gem in another
namespace when I require it, so that instead of just Color::* it
becomes External::Color::*?

Going through all my code and changing the name of my Color class is
turning out to be not only painful, but probably highly error prone.

Thanks,
AVram