"Black Pearl" is a good decorative pepper plant. It is very interesting and different with its black foliage.Other good ones are "Nu Mex","Medusa" and "Chilly Chili".
The Red Chile Pepper plant has dark green leaves and the blooms flower into small red peppers, and the Black Pearl Pepper plant has black leaves and blossom into black round peppers, both are edible and ornamental.
I personally like the Pepper Masquerade because have several colors, are not hard to take care of and lovers of heat, so kitchen is a great place where to keep it.
Sweet bell hybrids which carries resilient peppers that can withstand changes in temperatures. Ornamental which carry peppers that have very pretty leaves and fruit. Hot hybrids are tall and yield a lot of fruit. Hot peppers which are very pungent in smell. All pepper plants vary largely in color and pepper size.