Always fascinated with how emoji vary across platforms and can convey different intentions for the sender and receiver, we appreciated learning, courtesy of MetaFilter that the ๐ renders as offal pink with some stubble in Google’s Noto character set.
As nonsensical and a bit vulgar, in the juvenile manner like typing 55378008 and turning it upside down, as it seems, rather than some dumb tech bro easter egg, it can be traced back, with perhaps overzealous AI fidelity, to the original Unicode shading for the glyph, which was in turn based on heraldic hatching (Hachure) for Or—having previously established that the arcane and exacting language charges and emblems to ensure uniformity without having to devote the same time and effort in copying a design, nor wasted tincture for the colour.
Developed out of an earlier method called tricking for indicating the colours to be used for coats-of-arms with abbreviations—Or with A for aurum, Argent (silver, white) with a small a, green by vert with a small v for viridis—during the Renaissance a system of standardised dots and lines etched into the template and preserved as a linguistic fossil in Unicode charts in monochromatic equivalents before RBG displays were wide spread, yellow being a field of hashmarks, red represented longitudinal parallels, &c.