Thanks for sharing! I especially love the gorgonia pic and the two angels pic. But you're right, as you go down in depth you lose colors (which is why fish are brightly colored...it's the perfect camouflage). Eventually you just end up with blue or black.
On my first deep-water dive with my husband, I remember looking around for him and started to panic because I couldn't find him. I finally realized he was right beside me the whole time, but that his bright red dive shirt was poo-brown.