Oops, it doesn't look like 'colby day' is a national day..

Other days

brow

Brow Day
kiss a brunette

Kiss A Brunette Day
ruby

Ruby Day
ormille

Ormille Day
nail polish

Nail Polish Day
nae nae

Nae Nae Day
lumpy rug

Lumpy Rug Day
latina equal pay

Latina Equal Pay Day
cat girl

Cat Girl Day
boy friend

Boy Friend Day