This filter changes the amount of color in each of the three channels. You can add the query parameter im=filters:rgb(R_value,G_value,B_value)
Normal Image:
https://push-3272.5centscdn.com/KB_IMG/balloon_5CC.jpg
Transformed Image:
https://push-3272.5centscdn.com/KB_IMG/balloon_5CC.jpg?im=filters:rgb(-20,30,40)
