Keep string after charachter

[Jake Naismith]

Hello everyone, I have a variable called region which I would like to fix. I would like to keep the string after the ":" character.
My data looks like the following

* Example generated by -dataex-. To install: ssc install dataex
clear
input str60 region
"AD: Sant Julià de Lòria"             
"AD: Escaldes-Engordany"               
"AD-MD-TD: Encamp"               
"AD: Andorra la Vella"     
end

I just want to replace this variable with a corrected one where AD: Andorra la Vella will be only Andorra la Vella. Same thing for other regions.

Thank you for your time

[Clyde Schechter]

gen int  position = strpos(region, ":")
clonevar wanted = region
replace wanted = substr(wanted, position+1, .)

[Bjarte Aagnes]

replace region = substr(region, strpos(region, ": ") + 2 , . )

replace region  = ustrregexrf(region,"^.*: ", "")

split region , parse(": ")
replace region = region2

[Jake Naismith]

Thank you very much, Clyde Schechter and Bjarte Aagnes . I really appreciate it.