For your woodsy look, less condensation problems, and to avoid excessive weight
gain, you might check out some woodsy colored or patterned diamond tufted quilted auto upholstery fabric similar to was originally in the Compact-II. Here's what that looked like, but it's still the original color.
Hunter Compact II Photos by advocateone | Photobucket
I don't know about the top on the Jr. but the one on the Compact-II only weights about 20 lbs.
If you are in SoCal there is a great place in Rialto with tons of the stuff and very helpful staff. It's called J&J Auto Fabrics.