The 3/4 Front on view does look well with the wheels complementing the Black surround of the grill. My ownly concerns are due to having black wheels on my own MK3 Golf
1) The one and only time I've ever scuffed my wheel was with a black rim! ok it touched up but it wasn't a flat surface like the Monza's
2) When I put my silver wheels back on, I was surprised how good the car looked! (The black where the same style)
I agree with laney and it does make a difference with the colour of the car. They would look naff on my E30 in black, Silver & Red does look good.
At the end of the day it's if you like em, however I wouldn't sell the original wheels, it could help sell the car on and I think trying to buy replacement originals in years to come could be difficult.
I bet you can't wait for March!!
I'm still hoping mine will be here soon!