The extent that you are toning the colors down is a lot. The colors sometimes kind of get a weird effect on them that doesn't go with the signature. Instead of toning the colors down, you should use gradient maps. Not only will they change the shade of colors in your signature; but it they will also tie everything in the signature together. I agree with Sakura though, you have done nothing but improve since you made your app. Keep it up!I purposely do that I make most of my sigs colors toned down because I personally don't care for bright colors.