What does the cryptic crossword clue "For instance, very green light (3-2)" mean?

The wordplay uses a charade (building blocks). SAY (synonym="“for instance”") + SO (synonym="“very”") = SAYSO The answer is SAYSO.

For instance, very green light (3-2)

Guardian Cryptic #29634 | 23 Down | 2025-03-05 flower