I think it would look really great if you made it worn out a little, like on this pic
[Blocked Image: http://thumb9.shutterstock.com/display_pic_with_logo/216277/216277,1219433012,2/stock-photo-red-barn-16426576.jpg]
you could also make use of the 4blend textures to break the red color up, since the majority of the map is red.
edit: it also appears that you already use color correction, is that true? maybe that's why the red color is so dark/strong.