I have to echo shmuel294.i also looked everywhere on the cRc website and there is not a whit about Starbucks coffee. They do cite that only cans and bottles (except strawberries) is under their actual supervision but they say nothing about the coffees consumed on the premises.
popa- if i’d be a dayan ,i’d say that you are guilty of ‘geneivas daas”. Seriously, though, you must have a very boring life to spend your whole day in Starbucks…..