I see rock like this selling all the time at LFS's around here... I didnt think anybody would actually buy it to tell you the truth
If you are REALLY interested in colorful live rock I can give you some information on a guy with good prices that'll ship them to you no problem. It'll be kinda expensive though to ship as you probably already know.
Also your lighting isnt very powerful.. but that still doesnt mean you should see no color
Coraline just doesnt exist on these brown rocks you purchased..
I found out that test kits are a very very important part of successful fish/reef/invert keeping. If you are adding ANY supplements to your tank be sure to test for them. Overdosing them could be very bad and you'll end up saving money in the long run if you spend a little now on test kits.