Hi,
It also deppends a bit on your car color and if you have other black mods on it(black wheels).Even so my opinion is that the black bumpers do not look better than color-matched on any bug
But on a white or very light color one black bumpers could look better for instance.
I'll always go color-matched for a 'non light' color beelte.
Could you post a pic of your car?
take care,
Martin