For all you who put together kilts and other kit from mil spec fabrics, here is a retailer I just found that carries lots of bits and pieces.

http://www.supplycaptain.com/index.cfm

Velcro in mil spec colors is hard to come by, and these guys sell it in 4x12" blocks at a very good price.
They also have buckles and assorted hardware.

I couldn't resist ordering an "O Pos" blood type tape to attach to my ACU kilt.