I'll choose the same way I do every time: I'll go in store and compare the display models side by side to see which colour I like best.
What ever has a black bezel. A lighter color bezel is too distracting.
Slate
"Which every comes with a black front."
If the screen is pushed to the edge, this my not be a factor.
Black will be Black; White will be White & Gold will be Gold all on the back...