In the physical ones colored up to this point, it was an issue with the coloring pencils, where I was using my sister's set of erasable >.> colored pencils, which had a point where they removed as much of the dye as they added, making it impossible to make it any darker, thus I would have to rely on digital-touch ups.
In the digital one I put up today, I was experimenting with some methods of coloring, and thus I have not put on the final layers of color, since I am still experimenting to see what comes out well. (in the description, I even awknowledge it as being washed out; its a known issue, one that I'm working on resolving)
Ok, going to be out for a while, but I should be back later, possibly with more art.