Red-when-unripe bell pepper ???
Sorry this is a question about sweet peppers...
I grow a lot of kinds of peppers, and sell some at the farmer's market. An old lady asked for "the kind that are red right from the start", which she says she grew last year. I have never heard of such a thing - they might start out pale yellow but never red. Maybe some new hybrid? I mostly look for OPs. Apparently this one grew well in the the chilly, wet cascade foothills.