IMHO, it depends on your bodykit... or no bodykit.
some kits speak for themselves.
R2, VEILSIDE, BUDYCLUB, CARCEPT, INVADER, MOLY, TRIAL, ***TRD***
some kits need to be hidden, to be apreciated.
KAMINARI, BLITZ, MASSIVE, EXTREMOR, RAVE
but if you dont have any kit, either the celebrity graphics set (toyota/trd) or just a simple ROLL-CALL looks nice. sometimes even just adding a graphic design to the hood of your car is complementive enough.
...
i feel that the reason graphics work well with some body kit combo and not others, is because graphics, basicaly are accents...
example:if you have a wild kit, your graphics will clash... if your kit is too tame, your graphics will bring more attention to the places that need it. and some kits just stand well on thier own.
my $0.02