I sewed together three pieces of fabric, cut off a sample to save as the original, sprayed half of the remainder. It's been sitting out in the sun for several days so far, too early to see any change.

The sprayed section is on the left and extends about 2/3 of the way across the fabric. The spray itself made the fabric a little darker, so if you think you're seeing a difference, you're really not.
The stuff is called 303 Aerospace Protectant and claims to be environmentally safe: non-toxic, non-flammable, and biodegradable. They call it SPF 40 for your stuff. So we'll see what happens.
And the azaleas are in full bloom.
