You can do it, a plant will soak up more than just the water from liquids. You can color a plant by feeding it food coloring etc but they end up tasting like crap from every report of everyone I've ever seen try it. Even with just water and food coloring the final product ends up tasting like absolute crap. Just because coca cola tastes good when you drink it doesn't mean it'll taste good when you burn it. Try some if you like, just know it'll very probably end up completly ruined.