When it says "there's many shades of black," it could be a reference to what Henry Ford said about his cars in the early 1900s:"you can have any color as long as its black"[i'm paraphrasing]
it could be like, he's only had one choice [his current girlfriend/lover] this whole year and he can do whatever he wants as long as it has to do with her, like he's trapped.
When it says "there's many shades of black," it could be a reference to what Henry Ford said about his cars in the early 1900s:"you can have any color as long as its black"[i'm paraphrasing]
it could be like, he's only had one choice [his current girlfriend/lover] this whole year and he can do whatever he wants as long as it has to do with her, like he's trapped.