As far as any Jalapeno I've grown,
The jals are beginning to develop cracks in the skins.
when they get those cracks
or brown woody lookin' stripes on them, they are way ready to pick...
I can't remember seeing any red or yellow Jalap's..
Red tinged maybe......
Similar situation with some grape tomatoes. They've been looking full sized but still green for a while.
Some of the cherry/grape sized tomatoes stay
a greenish color...
I am not sure, but could be a stress issue, watering, sunshine, watering, or just the breed/brand etc.