2D WebGL Build is very dark, unplayable (linear fog not working?)

I've provided the following image to explain my issue. Just FYI, the WebPlayer build works approximately the same as the image labeled "Unity Editor." My issue is that using the new Unity WebGL build target, I cannot achieve the same level of brightness for my 2D game. It renders the game virtually unplayable on certain monitors.

I was of the impression that the default 2D sprite material was unaffected by lights. This means that what we're seeing is not a lighting issue, but potentially a...

2D WebGL Build is very dark, unplayable (linear fog not working?)