Here is the low down on the reds:
Bright red aka flame red, red with a little of orange cast.
Viper red, same just a hair more orange cast.
SPI Red. Pure red, one tint only, can give a slight orange cast.
Any of the above, all you need is a shot of black tint and you can get to Guards red, considered a red- red, would not take much maybe a teaspoon per gallon.