I'm officially entering female geekdom with this post..
I wanted to dye two white scarfes black, and I also have two Humvee's, one silver and one tan. (Fan of the robotic look). So I decided to put the tan watch in with the scarfes, since I want a black humvee. But instead of taking the color, it lost it on the lugs and on the bits on the corners. Ups! The light brown strap did take the color though and turned into a dark brown, The effect was cool, and I figured it would be even cooler on the silver one. Some residue stayed on the metal lugs, and I polished it away. I also swapped the modules, since one of them tend to have a more brownish hue in some light. (In the pic one is upside down, I have corrected that). All in all I'm quite happy with this accident.