Yellow (ConceptTopic, 5)
From Compile Worlds
Yellow is a bright color that is the source of much controversy. While many of us are taught in preschool that it is a primary color, along with red and blue, it is in fact a secondary color of light (alongside red and blue), as well as a primary color of pigments (alongside cyan and magenta). While in pigments, blue and yellow make green, in light, green and red make yellow, which may seem odd to anyone unfamiliar with color arithmetic.
Tails and Carbuncle are notably yellow characters, though the former was initially orange. Yellow's significance as a color is just about as convoluted as it's status as both a primary and secondary color. As far as the yellow Puyo are concerned, yellow represents happiness and bliss, but on Compile Worlds, yellow links link to pages that have no (or invalid) ontology, which is bad because then they prevent the page from ascending on the quality scale. Yellow also represents a "fair" page on both the quantity and quality scales.
Celestial bodies like suns, moons, and stars are often colored yellow for no apparent reason other than that you can't color something white.