I like the Argent Gray as well.
Just to complete the topic of wheel offset, you need to be aware of several dimensions when seeing if a wheel will fit:
Diameter of wheel
Width of wheel
Offset of wheel
(and bolt pattern and centerbore of course)
Since Offset is measured from the centerline of the wheel, the overall position/clearance of the wheel will depend on the width of the wheel. A positive offset means the hub mounting surface of the wheel is outboard of the wheel centerline when viewed. Here's a diagram:
taken from tirerack.com. This page may explain positive/negative offset a little more clearly:
Here's a Wheel Offset Calculator (with some better images as well):
If you go with a wider wheel, and the same offset as stock, the wheel will be closer to the strut/spring by the half the difference in the wheel widths. Also, you could lose steering travel if the wheel is so wide that it contacts the tie-rod before the steering lock.
Hope this helps...