Lol i have worked for Virgin for what seems like an age (and is!) and i can tell you now that they don't give a toss about what colour your hair is, or what ethniticity you are.
I'm brunette and have never heard such rubbish about VS only hiring blondes - Yes maybe Richard prefers the fair hair girls but then again, so do a lot of men.
If you are genuinely worried about Virgin not hiring you because of your hair colour/skin colour/inside leg measurement then maybe you don't understand what the company is about and it's not for you.