Am I jumping the gun?

Hi all, I’m growing Indigo Ruby tomatoes for the first time, this is also my first time growing an indigo variety. I’ve only grow red tomatoes in the past. These are growing well and have a shoulder with a light bluish tint, but then turn normal cherry red with a bit of darker red on the shoulder? This is still the first week of harvesting, they feel and taste done (only had two)… but they are pretty much standard cherry red. Should I wait longer to harvest them?