Hello, Goregle here. Wearing gold-eyeliner is not only limited to those on the gold caste.
Gold is a 8eautiful colour with a 'rich' history. Such a hue can 8e used to accentu8te the eyes, as well as match other troll features such as one's sclera and horns.
In a realm where even the concept of 'Goregle' could 8e considered a memory, people do tend to rely on those like myself for inform8tion. I truly do not mind 8eing seen as a 8eacon of knowledge, should you ever wish to confide in me for answers!