Feature Suggestion: Camouflage Frames

When i have worked with this mod to make a flush door, the easiest design isn't seamless and an idea come to my head: That the frames could be camouflaged
![2018-01-05_21 54 40](https://user-images.githubusercontent.com/33268599/34627994-119aef5c-f263-11e7-810c-974e5cdabc8a.png)
