I think its called colorblind. It was on deviantart.com
EDIT: Typing in 'colorblind' won't find it. I got some links though,
Widescreen: http://relhom.deviantart.com/art/Colorblind-wide-76597894
Not widescreen: http://relhom.deviantart.com/art/Colorblind-76517575
EDIT: Typing in 'colorblind' won't find it. I got some links though,
Widescreen: http://relhom.deviantart.com/art/Colorblind-wide-76597894
Not widescreen: http://relhom.deviantart.com/art/Colorblind-76517575