Most coffee ripens red, but some coffee ripens orange!
Most of the pictures you see of coffee show a red berry. Or green. Green is unripe. Red is ripe. But occasionally a coffee plant has orange berries. These are also ripe. And they are far less common than the red. They grow side by side. And the berries do seem to taste a bit different (not sure how the final coffee differs).
If a coffee tree (big bush really) produces orange berries it will only produce orange berries and will always produce orange berries.