Another Weird Situation

[Salsacharley]

I was picking fruit off a Bosque Green Cherry plant when I stumbled across a branch with these purple type cherry tomatoes. I had just picked some ripe green fruit from a different branch and I wish I had taken the picture with both colors of ripe fruit in the same frame. I'll try and get another picture when more green (GWR) fruit ripen as a comparison. Is this a somatic mutation?