Historical clue formulations

• Not heavy — 2026-02-16
• Diaphanous — 2025-10-07
• Word that can follow flash or flood — 2024-07-01
• Match, for a cigarette — 2023-11-08
• Traffic signal — 2022-04-18
• It travels at nearly 300 million meters per second — 2022-04-12
• Word before or after green — 2017-07-22
• Hardly serious — 2016-11-18
• Not deep, as entertainment — 2016-06-19
• Ignite — 2015-01-13
• Give the go-ahead — 2014-11-09
• With 8-Down, lime shade — 2014-07-22
• Work after work? — 2012-10-04
• Miner's hat feature — 2012-09-04
• With 31-Across, favored weapon of 36-/39-Across — 2012-05-23
• Green ___ — 2007-03-11
• Not weighing much — 2002-09-02
• Theme of this puzzle — 2001-05-08
• Smoker's request — 2001-03-10
• Traffic controller — 2000-06-26
• Beacon — 2000-04-01
• Feathery — 1996-06-27
• Frothy — 1994-09-17
• End of a tunnel, proverbially — 1994-04-25