Picked up a used Undercover SE --- how can I restore it?

After wrestling with which tonneau to get ever since I bought my Taco back in February, the decision ended up being made for me when I found a great deal for a used Undercover SE on Craigslist. The guy sold it to me for $350, and he even spent 20 minutes helping me install it. I'm glad to finally be able to secure my cargo (especially without having to get a pop-and-lock).

I'd say it's in 90% condition. Only issue is that the top has lost a bit of its "luster". I was wondering if there is anything I can do to restore it a bit. I did some reading through the forums, and it seems that a lot of people really like 303 Aerospace Protectant for vinyl covers and other plastics. Would something like this work well on a tonneau made out of ABS plastic? If not, is there something else I could put on it to both restore and protect it?

 

+1 for 303. worked magic on my se