Hi, Buffy
Bolt pattern is the same as the Colorado/Trailblazer. Great choice of wheel designs (mostly chrome) in the full size 6 bolt, but limited so far for the smaller 6 bolt. What is available is in 18s, 20s and 22s - very few wheels available in 19s. Add to that the drastically different front and rear offsets, and the choice gets more difficult.
A 20" designed for a Trailblazer will probably work fine for the fronts, as long as you find an 8" wide rim, but if you want to maintain that raked rod look, going to 22s for the rear means finding a small 6 bolt with a much deeper offset - I couldn't come up with a lot at SEMA. The SSR in the Asanti booth was using similar, but not idential rim design for the rear - didn't really like that combination.
Another difficulty was the limited avilability of narrow 20" tires for the front - no problem finding wide 22s for the rear. A lot of the SSRs at SEMA had fairly strange combinations - mostly tires that looked too wide on the fronts.
Best bets are definitely the companies specializing in custom billet aluminum wheels - a lot more flexible about what they will build. The guys at Colorado were definitely the most helpful at the show.
Ray