Color Plot

Hi all,

I'm trying to get a color plot from some data. It should end up looking something like this:
http://computation.pa.msu.edu/hpf/3D_test_color.gif

So far, this is the best I've been able to do:
http://i.imgur.com/MY9DyoZ.png

The one that looks like a color plot is actually just the top view of my XYZtomatrix 3D Gizmo plot. I'm having a rough time simplifying this. A 2D color plot like the first link I posted would be great, but I'd also be happy using the top view approach as long as I could get the labeling correct. Adding the color scale seemed to mess up the numbers I had on my x axis, and I also can't seem to get the axis labels to go where I want them.

The tutorial vids and the IGOR manual haven't helped me on this one, so any help I can get is appreciated. Thank you!