peppers green or red

Your question is a little confusing.

Are they a miniature type of pepper, or just currently at a small stage of growth?

Do you have 7 peppers or 7 pepper plants?
What variety?

Most Mini Bell peppers will be heavy croppers, given the right growing conditions.

Assuming that yours have plenty of light; warmth and a good growing medium, then they will ripen from green to red.

If they start to produce masses of fruit (some can produce 50+ per plant) then; my advice; pick a few as you want them, in whatever state of ripeness, which will allow others to grow on and ripen further.

Coloured Peppers (Red, Yellow or whatever colour they are designed to become) take a week or two longer.

I personally think that the plants then start to think they have "succeeded" at cropping and slow down / stop producing more.

I leave one or two plants to go red, the rest are picked green.