Help me GREEN my bathroom

I want to redesign my bathroom? First step, what type of flooring should I use? Bamboo, reused wood, recycled porcelain, concrete, rubber, cork? Is it better to fix the tub’s minor cracking or just replace it? What do you suggest for lighting? There are no windows in the bathroom, so solar solutions are out. What brand paint is your favorite?
kohler toilet review
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Post your ideas in the comments & suggestions please.