Question: Kooikers appeared in the paintings of a Dutch painter whose works are known for their abundance of what?

Related documents: [0]  [DOC] The Kooikerhondje (literal English translation "little cager dog" or "little caging dog") is a small spaniel-type breed of dog of Dutch ancestry that was originally used as a working dog, particularly in an "eendenkooi" (duck cage) to lure ducks. Kooikers were popular in the 17th and 18th century and appeared in the paintings of Rembrandt and Jan Steen. The breed is rapidly gaining popularity in the United States, Canada and Scandinavia, where it is still relatively unknown. [END] 
[1]  [DOC] Jan Havickszoon Steen (c. 1626 – buried 3 February 1679) was a Dutch genre painter of the 17th century (also known as the Dutch Golden Age). His works are known for their psychological insight, sense of humour and abundance of colour. [END]  
Answer: colour
colour