I use about 6 different colors to tie bags with.
Blue, pink, chartreuse, orange, red, white.

I use bridal veil from a craft shop for the white and blue. The other colors come from a couple of sources. Atlas and Spawnee both make these colors. You can buy it in 2 or 3 inch wide rolls, or in pre cut squares. I use the rolls, because I can screw around with many sizes without wasting a bunch of material. Don't waste your time with the little spawn tying machines. It's way faster doing it by hand.

If there is enough interest in this, I could mail Bob a bunch of digi pics, and he could post it in the Tips section. If you can't find the netting out there, let me know, and I'll give you a phone number in Duluth Minnesota where you can order it from. Good fishin to ya.