I agree with this. Ive seen blue TME stickers in photos and the flesh and I'm not a fan.Of course Personal Choice.
Think if it's Red, Black or Silver 100% yes looks better. Only colour not sold on in the Canal blue with the stripes - I just prefer that in the plain blue. The White it kind of depends - if it were a TME RS I probable would leave it plain. It kind of also depends on whether the car is standard looking or modified too.
You won't get a definitive answer - people who have TMEs and have fitted stripes will say they prefer them with basically.