Preheat oven to 375 degrees and line sheet pans with either parchment or silicone mats.
In the bowl of an electric mixer, add all but 2 1/2 cups of the flour. Mix until combined, then add in the remaining flour.
Separate dough into several bowls and add a few drops of food coloring. Using a spoon, your hands (with gloves) or the stand mixer, thoroughly mix in the color. Repeat until all of your colored dough is prepared.
Load the unchilled dough into the cookie press using desired dies and press onto the cookie sheets.
Bake for 8 to 10 minutes or until lightly golden. Cool for a few minutes, then remove to racks to cool completely.
Clean the cookie press and repeat until you have used all colors of your dough.
Store in airtight containers. These also freeze really well!