2300MP green dark shading

I just replaced the bulb on my 2300mp. The old one was under 400 hours old. That bothered me, but then after spending close to $400 my projector's image is shaded dark green. I have tried to reset the colors out of my laptop. I have used another computer (one Mac and one Dell). Any other thoughts? Is this a lamp problem, computer problem, projector problems, or just my problem : )? Thanks in advance for any help you can suggest.