- Army colour - Army fabric - Camouflage colour - Camouflage shade - Camouflage shade by quoting car key - Colour of car key, apparently - Colour of car key, they say
- 30th wedding anniversary gift, traditionally - Appear later holding oyster’s stone - Concretion of nacre - Gem in shell could be paler - Lustrous gem - Mass of nacre - Oyster gem