The best solution would be airbrush painting. Barring that brush painting but using a sponge brush to make it smoother. Not really sure what to do if the UV protectant isn't helping other than to suggest some sort of shade structure.
Every time I think about this it just pisses me off even more. Effin Photobucket, eff them.Unfortunately many of her photos were stored with Photobucket and so no longer are available to see but the text might still be helpful. I'm not into blow molds but do have two of them and remember how great the photos on this thread were to see.