Hi Pete,
In this picture of our van, if you look closely you will see some pin-striping on the lower edge of the fiberglass top. Our thought was the graphic would break up the van enough so that the casual observer would not notice the slight difference in whites of van-body/van-roof.

We got our graphic-stripe(s)
from http://www.stripeman.com Be sure to click through the various left-navigation-bar links...lots of fun ideas!

What we were not prepared for was that the 8 pin-stripes, though they are on a single _roll_ are actually individual stripes! I thought it would be some clear graphic with black stripes. It was a PAIN to put on the van, but then my wife and i are sort of OCD anal when it comes to our projects (read both perfectionists). Sure looks nice, but we needed some Zen time after that project! Hint, make sure you do it on a calm day with no wind-gusts!
As a side note, the black hood of our van is a decal too...of sorts. It is a 3M vinyl wrap in carbon fiber. It even feels like CF. We put it on within a few weeks of having the van as we wanted to preserve a clean look in case rocks, etc tried to find their way to the hood. Two years later and the hood looks perfect.

Thom