Color

• The most obvious difference between red and green curry is the color. Red curry is has a medium red color, while green curry has a medium green color that closely resembles the shade of grass. There is also a yellow curry which resembles the shade of mustard.
  
  

Origin

• The color of the curry indicates its main ingredient. Red curry is made out of red chilies. Green curry is made of green chilies but can also get its color from coriander, spinach or mint included in the curry mixture. Yellow curry is derived from turmeric.
  
  

Spiciness

• Since red curry is made from red chilies, the dishes made with this curry tend to be on the spicy side. Green chilies are made from jalapenos and are on the medium to hot side. When you order curry dishes from a restaurant, they can easily make the dishes spicier if you request it.
  
  

Uses

• Red curry is often paired with meat, poultry, seafood, tofu, noodles or vegetables to make spicy dishes. Green curry is found in meat, seafood and noodle dishes that have a milder flavor than red curry dishes. Yellow curry is usually sweeter, is paired with spices, such as cinnamon and nutmeg, and found in a variety of dishes and soups.