No pal i left mine chrome. It looks ok on my motor cause its silver. But on other colours the chrome does look horrendous.

If you want to do them black im pretty sure the best solution is to plasti dip them? I did briefly look into doing mine black but as far as i can remember, others have said the chrome trim is an absolute pig to remove? Think it involves removing the door cards and taking out the window? So i just left them chrome cause they blend in ok with the silver paint. But if i did have a different colour car say red or black i would of changed them to black 😃