I've been looking at official art and a lot of them have a brown tint to them in their eyes.Similar to certain Pokemon and Pokemon characters, like Pikachu and Ash (anime, obviously). They usually appear black, usually from a distance, but are brown. At times they're faint and at times they're obvious. I thought it was because they were old but they appear in the arts that appear in the games (some example Gems Collection) and appear in a lot of them. So far I've seen them in Amy, Tails and Sonic. For example, but not all the arts I can find with it,..: What do you think? Were there eye colors originally brown?