. ▁( The ▁surface ▁of ▁the ▁Moon ▁is ▁quite ▁dark ▁and ▁could ▁be ▁described ▁as ▁having ▁the ▁color ▁of ▁old , ▁weather ed ▁black ▁as ph alt .) ▁ ▁John ▁May n ard ▁Ke yn es ▁made ▁a ▁reference ▁comparing ▁a ▁green ▁che ese ▁to ▁the ▁moon ▁in ▁his ▁ 1 9 3 6 ▁book ▁The ▁General ▁Theory ▁of ▁Emp loyment , ▁Interest ▁and ▁M oney . ▁The ▁exact ▁meaning ▁of ▁the ▁sentence ▁is ▁deb ated , ▁but ▁the ▁equ ating ▁of ▁the ▁moon ▁with ▁a ▁green ▁che ese ▁is ▁clear .: ▁ ▁There ▁is ▁a ▁popular ▁saying ▁in ▁Scotland , ▁" You ▁can ' t ▁see ▁green ▁che ese ▁go ▁past ▁you ", ▁This ▁means ▁that ▁you ▁must ▁have ▁whatever ▁someone ▁else ▁has ▁just ▁for ▁the ▁sake ▁of ▁having ▁it . ▁For ▁example , ▁a ▁child ' s ▁friend ▁may ▁get ▁a ▁bi ke ▁and ▁although ▁the ▁child ▁is ▁unable ▁to ▁ride ▁a ▁bi ke , ▁they ▁will ▁p ester ▁their ▁parents ▁to ▁buy ▁one . ▁ ▁The ▁following ▁West ▁F ris ian ▁language ▁sh ib bo le th ▁makes ▁reference ▁to ▁it : ▁" B û ter ▁en ▁bre a ▁en ▁g ri ene ▁t si is , ▁h wa ' t ▁dat ▁net ▁s iz ze ▁kin ▁is ▁g jin ▁o pr j uchte ▁F rys ." ▁meaning ▁" But ter ▁and ▁bread ▁and ▁green ▁che ese , ▁who ▁can ' t ▁say ▁that ▁is ▁no ▁true ▁F ris ian ." ▁ ▁Che eses ▁that ▁are ▁green ▁in ▁colour ▁