In heraldry, what colour is gules?
What metallic element appears in the title of a play by Tennessee Williams?
Iron | Copper | Tin | Lead
In Star Trek, what colour is Mr Spock's blood?
Purple | Green | Red | Blue
What colour is the blood of cockroaches?
What colour was the owl and the pussycat's boat?
Carrot orange | Banana yellow | Pea green | Apple red
Is colour blindness more common in men or women?
Men | Women
What colour berets do the United Nations peacekeeping forces wear?
What colour is a Welsh poppy?
Red | Blue | Yellow | Purple
What colour does litmus paper turn in the presence of acid?
Blue | Green | Red
What colour are copper sulphate crystals?
Yellow | Red | White | Blue
