Paintstormstudio.com

Hello. I have a very simple question. How do I recolor something that I have already drawn? Lets say I have sketching layer in green but I want to change to red, just the lines that I have already drawn, with the rest of the canvas staying the color it was before. I know that photoshop has such a function, how do I do this paintstorm?

you can do it by different ways:
1)You can bloack transparent pixels (in the layers panel menu - preserve layer opacity) and then use "alt+backspace" to fill it
2)You can use color correction ctrl+U or a smart color correction filter.

Thank u very much