pistachio green

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A moderate to light yellowish or yellow green.

Wiktionary

1. n. A pale yellow-green colour, like that of the pistachio nut.
2. adj. Of a pale yellow-green colour, like that of the pistachio nut.

GNU Webster's 1913

1. A light yellowish green color resembling that of the pistachio nut.