Do you know any site where I can create/edit pictures online for free? (One where I don't need flash player :P)

You might give Gimp a try and it's free. I would use the CNET download to be safe but one here is all about it and the other is the CNET download site. Check it out and see if it's what you're looking for. It works good for me. GIMP - The GNU Image Manipulation Program

www.gimp.org/

I wanted to be able to add text and edit color and stuff...