The color(s) dark green and light green is/are claimed as a feature of the mark.
The mark consists of ENH3ANCER NH3 is the chemical symbol for ammonia (used in industrial refrigeration). The mark consist of the word ENH3ANCER with the NH3 in dark green and a larger font then the rest of the word, which appears in light green.
NH3 ENHANCER AMMONIA ENHANCER