[Lighten small parts of an image]

Thank you, LFC4EVER. You've been great help!

[Lighten small parts of an image]

I don't know if this has been asked yet, but I will ask it anyway. I am wondering how to lighten some parts in an image. I don't mean lighten the image or something like that for photography.

Here's an example of it from a forum signature from signaturebar.com:

That lighter shade of purple in the image is what I'm looking for.

Hopefully I can get an answer. It would mean a lot!

Thank you for any help!