Does Colorado have lots of color? A riddle is:
   
Q: Where do crayons go for vacation?
A: Colorado.
 
The crayon joke has been cited in print since at least 2006.
 
     
Wikipedia: Colorado
Colorado (/ˌkɒləˈrædoʊ, -ˈrɑːdoʊ/, other variants) is a state of the Western United States encompassing most of the southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. It is the 8th most extensive and 21st most populous U.S. state. The estimated population of Colorado was 5,695,564 on July 1, 2018, an increase of 13.25% since the 2010 United States Census.
 
The state was named for the Colorado River, which early Spanish explorers named the Río Colorado for the ruddy silt the river carried from the mountains.
       
Yahoo! Answers (September 6, 2006)
Where do crayons go on vacation?
Best Answer:  To Colorado!
             
Google Books
August 2007, Boys’ Life, “Think & Grin,” pg. 54, col. 2:
Fred: Where do crayons go on vacation?
Bob: Where?
Fred: Color-ado!
Caleb Clawson, Johnson City, Tenn.
     
Google Books
The Happy Classroom:
From Ha-Ha to A-Ha
By Janet Aaker Smith
Marion, IL: Pieces of Learning
2011
Pg. 95:
Where do crayons go on vacation?
Color-ado.
 
Twitter
Leslie Beard
@lesliespot
Replying to @ahj
@ahj my son: where do crayons go for vacay? “Colorado” ha!
10:15 AM · Apr 20, 2011·Twitter for iPhone
   
Twitter
eli-duh
@duh_eli
where do crayons go on vacation? colorado!
10:48 PM · Jun 4, 2011·Twitter Web Client
 
30 June 2012, Newsday (Long Island, NY), Kidsday sec.,  pg. B33:
Where do crayons go on vacation?
Colorado.
(...)
All jokes from Julian Mercante
 
Google Books
The Super, Epic, Mega Joke Book for Kids
By Whee Winn
Grand Rapids, MI: Zonderkidz
2016
Pg. ?:
Where do crayons go on vacation?
Colorado.
 
Reddit—Bob_villa
PROMOTED u/bob_villa_April 12, 2018 fromHomegrown creative gear from a local
Where do crayons go on vacation? Color-ado! You are going to need this awesome Colorado state flag trucker hat before you know it. Gear up, keep the sun out, and prepare for warmer weather. Buy from a local!
Homegrown creative gear from a…
 
Reddit—Dadjokes
Posted by u/Megaseth February 10, 2019
Where do crayons go for vacation?
Colorado.
(My 8 year old just made it up)
 
Reddit—Dadjokes
Posted by u/coffee_cow February 22, 2019
Where do Crayons go for vacation?
Colorado.
 
Reddit—Dadjokes
Posted by u/LivePermit August 2, 2019
Where do crayons go for vacation??
Colorado.
(My 8 year old just made it up)