Hi,
Another one of my quizzes, answers will be available in about a week.
Usual request, Please don't put answers in the thread. Comments, score claims, etc. welcome, but not the answers.

The theme to the answers is in the title. Bear in mind that my wife thinks I've got a terrible idea when it comes to colours!

1        Under what names did Dan Ackroyd & John Belushi appear together on the 'big screen'?
2        Which service is known as "The Senior Service"?
3        What nickname is used for the Italian Rugby team?
4        For which 1985 film did Whoopi Goldberg receive an Oscar nomination for Best Actress?
5        What name is shared by caves on the Croatian island Bisevo, Malta, The Greek Island Megisti, & (possibly best known) Capri?
6        Computer printers usually make up all colours from a mix of Magenta, Yellow, and … what?
7        Between 1979-82 Joanna Lumley appeared as what character (alongside David McCallum in a science fiction series)?
8        In 1956 Elvis got two records to #9 in the UK charts. 'Blue Moon' & which other?
9        Which rock group were named by Ritchie Blackmore after his grandmother's favourite song?
10        What name is given to the adjustable sized aperture on a camera?
11        Which rugged cotton twill textile gets its name from the city of Nimes in France?
12        Which blue dye is obtained from Isatis tinctoria sometimes known as 'Asp of Jerusalem'?
13        Which mineral (and in finer grades, gem) takes its name from the French for 'Turkish'?
14        Which UK radio sit-com was based aboard HMS Troutbridge?
15        What name is given to small dabbling ducks. Males have chestnut coloured heads with broad green eye-patches, a spotted chest, grey flanks and a black edged yellow tail. Females are mottled brown. Both show bright green wing patches (speculum) in flight.
16        Where did Fats Domino (among others) find his thrill?
17        What colloquial British term that refers to the emergency vehicle equipment of combined flashing lights as well as sirens that the emergency services in the UK and Ireland use?
18        What is the largest known animal ever to have existed?
19        In 1997 who beat World champion Gary Kasparov in a six game set, winning 2, losing 1 & drawing 3?
20        Which tv series had (as one catchphrase) Sgt Jablonski saying "Let's be careful out there"?