I am not sure if anyone has done this already, but I am too impatient at times when I want something to go looking around so I just went ahead and did it myself. While I was decorating a home, I was a little frustrated that EA didn't make the valance of these curtains (which I absolutely adore) that came with Supernatural a separate color from the curtain itself. So of course while this is only of my own personal taste, I decided to share for anyone else who might have the same problem with them. Comes in 1 preset and has 3 recolorable channels.
I have done two versions of these. A default replacement for those of you that have Supernatural and then a Base Game version for those who don't. None of the textures or Meshes were changed, I only added a color channel for the Valance and trimming at the bottom.