Brown eyes are the most common eye colour on Earth. That does not make it a {{trope}}, however, and it should not be listed on work pages.

Same for hazel eyes.

Sometimes, brown eyes may be a sign of the following tropes:
* ElementalEyeColors, for when they match the character's elemental affinity. Usually associated with [[DishingOutDirt earth-based powers]].
* MeaningfulAppearance, for when the work or WordOfGod explicitly call them out as a sign of a character's trait.

Such examples should be listed under these tropes.