I know that companies dye the gasoline that goes into cars, but is there a specific color that it should be respective to octane? A couple of month's back when I first opened up my gas tank, I had Chevron 92 in the tank. I noticed that the gas was tinted blue. Saturday moring my fuel pickup hose broke (my fault. I tightened a hose clamp way to tight, and it cut the rubber). The day before I filled up with 92 octane from a Wal Mart gas station. When I opened the tank, the fuel was yellow. Is the color of the fuel an industry standard, or is it just by whom ever distills the fuel? Because I know that all tax-exempt diesel for agricultural use is supposed to be red for example. I just want to make sure that I didn't get jiped when I filled up with the higer grade, or at least what I thought was higher grade fuel. -Robert vin 6585