Got a bit worried seeing the green tinge - but the wood is not treated, it's a natural coloration (the documentation points it out). The bed is beautifully built/designed. Very sturdy, and I love the two middle bars that make an under-bed, center support unnecessary. Instructions are a bit off, nothing you can't figure out - but you do need some extra stuff: a mallet, maybe some wood glue if you want to glue in the dowels.