the only other thing you could do is paint it black . they make paint that will stick to plastic. I live in south Florida so thats really not necessary but if you live in northern climates you might need to find a good sunny spot and place it there! the advantages of this barrel composer are quite a few. its quick, cheap and effective. no bugs or rats, almost no odor. you can use it in a very small yard and not bother the neighbors.
I square foot garden ( mel is a genius ) and buying fertilizer and compost can add a lot of expense you don't need. I save a lot of money growing my own food and you would amazed how much food you can grow this way .good compost can double your harvest!