Yellow Propane Tank
What is the difference between a blue propane tank and a yellow propane tank used for plumbing? 3
Blue is usually propane and yellow is maple gas.
If both are filled with propane, only the color of the tank is different.
I think you know that seeing is the right answer. Propane V Map
For your information, Map gas burns better than propane. Although it is more expensive than propane, it works much faster.
