Color correction is accomplished with the tools in the upper right portion of iCorrect Portrait's main window:
These controls allow you to correct the range of tones in the image, the overall brightness and contrast, and the appearance of certain memory colors in your image, such as neutrals, skin tones, and custom colors that are important to you. These controls are all described in detail in the next section of this User Guide.
There is also a group of buttons in the lower right portion of the window that allow you to set all of the color correction parameters at once:
These controls are described further on the More Controls page of the User Guide.