Not sure if this is the real 7 strand stuff, but it is available in many colors here:

http://www.ubraidit.com/pricelist.htm#paracord

And this place specifically says the mil-spec 550 is available in OD, red, black, and white....not cheap though.

http://www.vtarmynavy.com/parachute_cord.htm

TAD Gear has 4 strand stuff in various colors.

I used to have a hank of avalanche cord that was 7 strand red paracord, but I bought this in the late 1970's and the use of avalanche cord is pretty much gone now with the advent of reliable beacons.