It's difficult with lighting, etc. to get a good pic of the color. Found the same issue when trying to color match the frame for some new wheels. Here's what it looks like:
For reference, the frame is gold'ish, head is semi-gloss black, middle part of the case is silver and the outer half and slave are all the same color (even though it doesn't look it). Kind of a dark gray with a bit of blue and bronze to it.
Probably end up taking the part to a parts store and try to match against a lid. Don't think heat will be an issue though.