I think it looks nice, the black tips just get lost in the black diffuser a little.
The GTC I was running has 90mm/3.5" tips and I would not go any larger personally.
You may want to consider a longer tip, regarding the length, so you cannot see the muffler canister outlet and the back side of the tips connection.
Maybe swap the tips for a double walled, polished option that has a slightly longer length.
Pics of the back of my car from install, knew I had some!
