@toxicatedflavor why do you assume the liquid is of a colour perceptible to human eyes? why must you assume the liquid is even of our corporeal dimension and can be observed? does the colour matter? do you obsessively catalogue the colour of liquids you find?
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it's red
ULTRAKILL layer 9 will likely not remove the players ability to "see", as sight is one of the 9 main senses, alongside hearing, touch, taste, smell, glass, spidey-sense, the one we don't talk about, and green.