Maybe you are just crazy. Here's to the crazy ones... 
As an alternative, anodized aluminium can be dyed (the surface layer of aluminium oxide absorbs and holds dye). It's how the colored iPhones are given their space grey or gold color.
And the watch is supposed to be water resistant - so it's an option.
You'll need a special dye IIRC. Probably best to stick to pale colors to minimize signs of unevenness or eventual wear
As an alternative, anodized aluminium can be dyed (the surface layer of aluminium oxide absorbs and holds dye). It's how the colored iPhones are given their space grey or gold color.
And the watch is supposed to be water resistant - so it's an option.
You'll need a special dye IIRC. Probably best to stick to pale colors to minimize signs of unevenness or eventual wear