3j2m7,
My graphics card is an AMD Radeon HD 6670 1 GB. It's about 2 1/2 years old. When it was new it was just run of the mill. Nothing special. The card has color saturation controls, but I don't use them.
I have used Paint.net(FREE). It has controls to desaturate, sharpen, and much more. Everything you need to make a good pic.
Post some, let's see what they look like. You might be the CMBN Robert Capa.