You could just go for the right color, which is, of course, maroon. WHOOP!
When I made the cake below, the color was the same as half of DH's wardrobe (he's a diehard Longhorn fan)...it wasn't on purpose, really. but I mixed, orange, a bit of red and a bit of brown...not much...
I wish I had a clearer picture of it, it really was darn near the same color.
http://cakecentral.com/modules/coppermine/albums/userpics/52155/normal_Summerfloral.JPG
If you can find the orange color then start with it and then add brown. U could also try orange and a little black. If not then start with yellow and then add a little brown, then start adding the red, if its too much, the yellow will be easier to fix than if starting with red. HTH
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