Major US supplier of glass blowing tools and colors. The website is well laid out and has a great color comparison tool.

They carry Reichenbach and Zimmerman color (Gaffer dropped them); Jim Moore, Spiral Arts, Steinert, Correll and Blockhead tools.

The website is a mess, but their 'color kits' are great, especially if you're just starting out and want to play around with color without spending a fortune.

 They carry Kugler, Q-Color and Wiesenthal color; Essemce and Palmer pipes and tools.