And like someone said above, fiddling with it makes the image VERY yellow like below:
While it can't ALWAYS be fixed, playing around with it in selective colouring may help. This is what my playing around got:
Not perfect, but it took away a lot of the ugly greenish/yellow tones. I tried to make an icon from it, but it wasn't too good. I'm sure your playing around will be more dedicated thsan mine.