The Royal Horticultural Society doesn't agree with you, Smow (and I don't, either!)
All sweet peppers are green before they're ripe. The most common varieties turn red when they're ripe but others turn orange or yellow. (There are also some lesser-known varieties which are purple or white when they're ripe).
So there are green peppers that turn red, green peppers that turn yellow and green peppers that turn orange but there aren't any that go through an orange or yellow stage to get from green to red. You're mixing them up with traffic lights ;-)
https://www.rhs.org.uk/advice/grow-your-own/vegetables/peppers
(See 'Varieties')