Lol...
It's every state, and they do it for all unclaimed property.
They're not stealing it, every state has a website. Type in your name and it will list every amount and where it came from. Prove you're that person by supplying current banking info in your name, and they'll send you the money.
Edit:
You should probably check if you have anything else:
https://unclaimedproperty.colorado.gov/app/claim-search
Like, say you forgot to close a checking account with $20 a decade ago. Eventually the bank doesn't want it, they turn it into the state. The state doesn't care if you get it, so they wait for people to ask.