To look through green glasses. To feel jealous of one; to be envious of another's success.
“If we had an average of theatrical talent, we had also our quantum
of stage jealousies; for who looks through his green glasses more
peevishly than an actor when his brother Thespian brings down the house
with applause.” —
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894