Depending on how intense the melanin in your hair is, the sun can/does change the colour of some people's hair. If I lived in complete darkness my hair'd be brown, but as it is it's blonde.
Java Fern's around the same price here I've heard Shae. It seems kind of silly, charging that much for it though, it grows like crazy! I got tons of it with a tank that I got, I gave Eon a bagful of it and he told me then how much it was, I was amazed. Dunno about the price of the moss though, but it grows at a similar rate.