You can always edit photos in Photoshop or a similar program. Honestly, it sounds like a lighting issue there to me. That's a pretty easy fix. Check out our photography tutorials :wink:
Weather can sometimes be deceptive. I haven't worked a lot with Rustolium, honestly. My go-to has always been Krylon Fusion for plastic.
What kind of paint are you using? Weather can be problematic with paint. I generally just let stuff sit until it dries.
What are you wanting to do? What I mean is, there's all kinds of things you can do with the figure itself, but it'd probably help more if you had an idea in mind and just go after it rather than taking a figure and forcing an idea for it.