Multi-pass issue

When I set up my render using multi-pass the image comes out changed. If i render without multi-pass it looks as it should (i.e. like I want it to). The picture w/ multi-pass is greyed down and dull. Don't know how to resolve this. Even if when all the multi components off except for the object buffers, still looks terrible.

I want to use multi-pass for Photoshop post editing but when I'm using the multi-pass it makes the image different. Any suggestions?