To me, this is LOL funny, but, a lot of people won't understand this.
For those that don't, red dyed diesel fuel does not carry highway taxes, thus costing much less per gallon for the user. Using it for a vehicle operated on a public highway is considered tax evasion and can result in massive fines if/when caught.
The owner of a company that I once worked for was threatened with jail time because red fuel was found in a water truck licensed for highway use. The truck had been on a jobsite for several weeks without entering the street, so the fuel/oiler guy kept refilling it with the red diesel. When that particular job ended and they moved the truck to a different jobsite, it happened to get pulled over and randomly inspected.