Im now carrying Hyspecos link of Parker PTC fittings and colored airline.
As of now i have 3/8'' line in black, red, blue, green, orange, yellow, brown, and silver. all lines are rated at 150PSI and have a temp range of -40°F to +200°F. Im working on getting 1/4'' and 1/2'' airline as well.
http://guiltybydesign.net/?category=Air+Management&subcategory=Air+lineI also have Parkers line of Global Connect fittings. These fittings feature compact one piece design, positionable swivels save time during installation, color-coded release buttons for easy identification, and pre-applied sealant prevents system contamination. they have a Polyamide plastic body and stainless steel grab ring. Theyre rated at 150PSI and have a temp range of 32° to +140°F. My pricing on these are nearly half of what youll find on other air ride sites.
http://guiltybydesign.net/?category=Fittings