Good point sgould. I guess you're right. I was given most of the decorations and I arranged them the way I thought they'd look best. Then I went out and bought that ceramic bridge myself and just slapped it in the middle of the tank.
As for the blue plants. Thanks. They were given to me with the tank along with the two different shades of blue gravel, because the person that got me the set-up knew that blue is my favorite color.
I also have two black plants, I believe they're a plastic immitation of some kind of spear plant but I thought I'd save those for my next tank set-up which hopefully will be under construction very shortly.