Yes, sorry, I meant the one simulating tritanopia - blue-yellow colour-blindness - not that the image itself was blue & yellow.
(It's just greyscale to me fwiw, as someone non-tritanopically (I've never been sure what, nor the optician, doesn't seem to be cleanly proto or deuteranomoly, perhaps some combination?) colour-blind viewing it filtered to simulate that. On some hand-wavey high level I lack the ability to see what's left after what I can see has been removed, I suppose.)
(It's just greyscale to me fwiw, as someone non-tritanopically (I've never been sure what, nor the optician, doesn't seem to be cleanly proto or deuteranomoly, perhaps some combination?) colour-blind viewing it filtered to simulate that. On some hand-wavey high level I lack the ability to see what's left after what I can see has been removed, I suppose.)