I've never seen it in red color! I think both the orange and the red varieties are of different species than what we see here in California. Our plants here are more of a hardier kind, I believe. They tend to be at least double in height, the leaves are not glossier (the way we find here in this picture), and there are fewer flowers per plant (the plants are more densely packed - very bushy).
Rajam ma'am is sure lucky to be enjoying all these different varieties of flowers!