The screenshots shown in my post were from an older version. The current version should work correctly. The purple tint was coming from naïvely multiplying the

The screenshots shown in my post were from an older version. The current version should work correctly. The purple tint was coming from naïvely multiplying the red and blue channels by 2 to try and compensate for the fact that you have half as many subpixels of R/B to work with as compared to the green channel. My new approach cuts the maximum green brightness (after converting to linear gamma) instead. https://rickyromero.com/tmp/diamond-happy-mac.png https://rickyromero.com/tmp/diamond-happy-mac.png I stood pretty far back from my laptop's screen and it looks more accurate to me now :)