Best 15500 color after blue?

[interestedinwatches]

I have a blue 15500 but just recently acquired a blue 4500v. I'll be honest, the blue on the 4500v is just better than the 15500's. It is a bit of an overlap at this point but still want a 15500 in the collection. The question is which color?

Grey is definitely out. It is too monotone in my opinion. So it's between white and black.

Maybe even rose gold and black? I am debating the gold option.

What are your opinions?