Name something that is the colour I name to start off (can be anything), then leave a colour for the next person.

Example: "[color] is the color of my [object]." then "[colour]".

Mine:
Red is the colour of a ruby.

Yellow

beige is the color of my son's train table

pink

Pink is the colour of my book.

Brown

Brown is the color of my currently dirty (white) dog.

Grey

grey is the color of the pillow on my couch.

lime green

Lime green is the color of slime!

Light purple

light purple is the colour of one of my spreadsheet columns

aqua

aqua is the color of a mermaid tail

maroon

maroon is the color of my pillow case

teal

Teal is the color of theo's toy 

Periwinkle 

Periwinkle is the color of play doh my kiddo is playing with

purple

Purple is the color of the blanket on my son's bed

white

white is the color of my coffee cup.

black