How did you make that image? If I had to, I'd create an awful custom profile for my monitor and work with that in Photoshop et al, but that's kind of a kludge. Did you use a tool to change the ICC profile behind it?

In Photoshop: Convert to Profile → Custom RGB… → move primaries' numbers around. I also used ImageMagick to add gAMA chunk.

So is this Chrome sucking at PNGs or my calibration?

http://yfrog.com/hsrnnnp

I think it's Chrome. It looks like it applied both ICC and gamma, but PNG spec requires to pick only one of them.