Have just made an executive decision that my two-tone palette concept was simply not working for me, especially since it reduced the quality of gradients, so I’ve chucked it for the JujuScript version of Drivey. [ That's the version which will never see another release because I am not supposed to be working on it. Only on C++ version. So just ignore this picture ]

When just one colour is used the human eye is reasonably comfortable adjusting for it¹– so in the shot above we aren’t looking at a green landscape; we are looking at a landscape though a green filter – whereas using two or more colours prevents this automatic adjustment, and so the colours just end up looking fake.

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1. A bit like the white balance on a video camera.