Fallout 3 always has been and forever will be drowning in the color green – a visual hue that game director Todd Howard was very insistent on getting right – but co-creator of the series, Tim Cain, was none the wiser before the game came out because he's colorblind.
Bethesda has previously spoken at length about Fallout 3's "great green debate," and how if art lead Istvan Pely tweaked it at all in the middle of development, Howard would be "like, 'You changed the green.'" Producer Craig Lafferty previously commented that he "lost count" of "the amount of times we redid the color green" – which is pretty funny considering how controversial the ever-present hue was (and still is) amongst fans. But Fallout veteran Cain – for obvious reasons – didn't even notice.
