No,some turn Red , orange , yellow , white , Brown or purple.
Red is the dominant color for most but it depends what pepper it is.

Cayenne can be Red , Purple , yellow or orange/red.
Might be other colors too,I've only grown the above ones/colors.
If they were picked too early they might never turn color before they dry out.

I think what he was asking was whether or not green is the "final color" (i.e. fully mature/ripe) for any pepper. Some peppers such as Serrano are primarily used in the green stage. But, as Smoke said the "final" color is varied. As far as I know there are no peppers whose final/fully ripe color is green. There may be an oddball cross out there that ripens at green, but I've never seen it.

Yes they do..jalapeños do too but take for ever so you will mainly see them used green

thank you all, that answers my question. I was wondering if there were any peppers where the "final" color is green. it sounds like for what I'm growing the answer is no. i'll just have to patient and wait for the change.

the wait is worth it .....most times will be a hotter pepper with more viable seeds if you plan on saving some .

There is a green habanero and 7 pot that stay green.As posted above A couple green bells too.

Correct me if I'm wrong. I've never heard of CYAN peppers....

But wouldn't you be looking for a final color of BLUE?

Kevin

The in-between stage is the interesting part. In fact, certain varieties by how they transform to the ripe color, usually red, is often used for identification.

For example, Congo Trinidad peppers go from green to red direct, with no yellow or orange stage.