Its ment to represent overcomming struggle, its not religious and neither am i, the wings are more about freedom, and ovcomming, rather than purity and holyness. This wasn't the artist's usual tattoo style, but i still think she did very well.
That looks so cool. I was actually going to get green and red in my tat too (because it pops out so much against the black ink). It looks just as awesome as I thought it would.