Is there a feature of Paint.net that I can use to selct a region by a colour? Basically, I have an extrmely simple design... Two overlapping semi-circles that I want to change the colour on... They are currently two shades of grey and come together in the middle to make a darker shade. I would like to change one side to a blue shade and the other to a dark red shade and have the middle purple... Everything else on this image is white. Can someone explain how I could go about doing this on Paint.NET or on GIMP if you have it, or mention another program I can do it on (preferably a free program).?
