Choose your desired pasta and place one cup (or more, if desired) in zip top bag.
Add about 1/4 cup rubbing alcohol and 10 drops of food coloring, eliminate air, seal bag tightly, shake, and lay flat.
Allow mixture to fully saturate pasta. The longer it sits, the more defined the color.
Carefully remove and place on paper towels atop foil or a cookie sheet (so excess dye does not stain countertops) until dry, preferably overnight. Store in jars or other protective means to prevent breakage.