I had this same problem, and I am 33. Needless to say I've stopped dying my hair to let the grey in. I've decided to go with more of a mid fade with a swooping V in the back and layers on top since I have thin hair.
Bottom line no matter what the race I've found if you have more of a groomed clean cut look it helps, no decals (i looked much younger), flashy styles unless you dress to go with the style and keep as much side burns as you can and dont point them unless you got a beard of stash growing in. If you get a line up make sure they stick close to your natural hair line as possible because when it grows out there is less transition and stray hairs.