You said the scars were a purple color, are they raised, or puffy?
Most likely they'll take a while to turn white but then you're stuck with a white scar, but depending on your complexion the white scar usually isn't very visable. But then again, I'm pretty pale.
Re-cutting isn't good if you want them to go away. I'm sorry, I don't mean to sound like a bitch, but a wound can only heal itself so many times before it leaves a nasty scar.
About the picture, ask a mod or admin, they might allow it.
If not, could you PM it to me, sorry I'm kinda shooting in the dark without a visual.
I'm sorry, not much help.