Saturation with certain fog colors

[1AmYF]

Just saw this on Twitter, looks pretty cool somehow but not sure it was intended ;D
https://twitter.com/T0M_smg_noob/status/835719019835502592

I reproduced it for comparison with the previous version, the fog color on that map is RGB(0, 148, 255), similar happens with some other colors too.

Version 0.1.1:

Version 0.1.0:

[yvt]

This is an unintended behavior and is caused by a defect in the equation that boosts the ambient lighting when the fog color is too dark. I hadn't thought someone would actually choose such a vivid color.