I always wanted to have a prayer rug!
At the bottom of the rug there is a nice moss green in some places. In the hooked border framing the field, this green gets soon replaced by a colour that might have been similar to the stable green but has over time turned into a not unpleasant grey-mauve, more reddish than greenish in tone (see first two images). On the back of the rug the colour change is also there, but less pronounced — it looks more like a green-brown (see third image). The colours front and back are close (no discernable tip fading when peeking into the pile) but there is a difference nevertheless.
http://www.oturn.net/rugs/anatolian-prayer.html

http://www.akrep.se/enindex.html
http://www.akrep.se/akrepny/Tomeng.htm