Complex sentence: The "color" of quarks and gluons is completely unrelated to visual perception of color; rather, it is a whimsical name for a property which has almost no manifestation at distances above the size of an atomic nucleus.
Split into simpler sentences: The "color" of quarks and gluons is completely unrelated to visual perception of color. Rather, it is a whimsical name for a property that has almost no manifestation at distances above the size of an atomic nucleus.