sand and spinach - Wiktionary, the free dictionary
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From Wiktionary, the free dictionary

sand and spinach (uncountable)
- (military, colloquial) A form of camouflage in dull green and olive colours.
2012, Stuart Slade, A Mighty Endeavor, page 81:
He left to supervise the repainting of the Flying Fortress. It was already beginning to sport the British "sand and spinach" color scheme […]