First Elves - Color

Hadn't intended to color this, but I started working on it as an experiment in trying to use layers and liked the way it was came out. Actually, I couldn't stop fiddling with it, and finally had to just upload it before I went insane! But there's still a lot of stuff I'd change, didn't shade under the ear of the first elf, jaw line too dark, etc.

Something about the color reminds me of an old photograph or painting, or perhaps it was an old style of print, something from the 1940s maybe, can't quite put my finger on it...

For more explanation about the elves, please see the sketch [link]