of course can lah! Anyway I personally feel that the red GF1 looks the nicest amongst all the other colours. I used to own the red GF1 and really like it. Don't care what others think, if u like red, just go for it.
that you are asking this qtn only shows you are not very comfortable with it. you have answered your own qtn. ask yourself, not others, are you comfortable carrying a red camera around? personally, i am not bothered.