It doesn't matter if a cat is black or white, so long as it catches mice.
Black cat, white cat, what does it matter as long as the cat catches mice?
Black cat or white cat: If it can catch mice, it's a good cat
I don’t care if the cat is black or white, I just want it to kill the mice.
No matter if it is a white cat or a black cat; as long as it can catch mice, it is a good cat.