Color is not claimed as a feature of the mark.
The certification mark, as intended to be used by authorized persons, is intended to certify the fuel properties and the fuel quality grade of pellet fuels.
"GRADED FUEL, PELLET FUELS"
The mark consists of from left to right, a rectangle bearing the words PFI GRADED FUEL, a drop of liquid with a leaf, and the words PELLET FUELS INSTITUTE.