

First we will convert the Image to CMYK and then adjust the colors in the Cyan channel using Curves.
It is easy to look at an Image and see whether it is lacking in one color or whether it needs more. The Image used in this exercise has too much blue in the grey areas. If you print the original with Sublimation inks the greys will print blue
It's interesting how we associate reds with warm and blues with cold.
If you already haven't done so then visit the Color page to learn more.