If you like it, keep it. I personally like it because it makes the Mac stand out.
If it doesn't light up, I wouldn't keep it, however.
One thing I noticed (not trying to be a jerk) is that it looks like the top of your Apple is missing a green stripe, going right into the yellow. I compared the two pics you posted and the one is different. I wouldn't fret over that though, it looks great!
I'm glad you took the plunge doing something so dramatic to your computer. It might even score you some points if you wanted to sell it on eBay.