Once the Nasemond Guard left the Tidewater area in May of 62 their lot was cast with the ANV. I would suggest you pick a time period and uniform your company in the uniforms that the rest of the army was being supplied with in that time period.

http://www.angelfire.com/ma4/j_mayo/9va/rifles1.html

The above link is to Company G of the 9th Va. Some examples of uniforms used at various times can be seen on the images of soldiers from that regiment.