Welcome to SBG Scott!
The razor will give the skin the most uniform color, otherwise you'll see a little darkness from the hair (if your hair is like mine, which is rather a darkish brown). My hair seems to get darker the longer it is.
I spotted another gent who was sly and you could see the hair so it may have been really dark roots or he does what you do (a #0 all over).
If your skin is fair, be REAL careful with the Sun. I tend to burn easily even out in the sun for short periods of time. It will darken up and become more uniform over time. The top of my head has better color since my hair had been really thin up there for a long time and sporting buzz cuts for years helped that cause.
Patience and perserverance will be what you need, but you should at least try shaving (go by the 30-day-rule). Since your hair is already cut really short, you can get back to a #0 length in only a few days if you decide it's not for you, but I imagine you'll find it pretty enjoyable to have a smooth head, like most of the fine gents (and a few gals as well) do.
Good luck!