Can you used green chillies instead of red chillies in cooking?

Many recipes call for green chillies. However green chillies are less sweet than Red and of course do not color the dish red. The particular cuisine in question makes a huge difference. It seems unlikely that Madras Curry made with green chilies would be very good, but a dish like chili-colorado could be made with flame roasted green chilies and colored/sweetened with sweet paprika to give it a more traditional flavor and appearance.