BUR #5903 has been approved by @evazion.
remove alias grey_earrings -> earrings
remove alias white_earrings -> earrings
remove alias pink_earrings -> earrings
remove alias black_earrings -> earrings
remove alias aqua_earrings -> earrings
The 6 most popular colour_eyes tags are blue_eyes, red_eyes, brown_eyes, green_eyes, purple_eyes, and yellow_eyes. For all of these, you can type at the very least least colour_e and get an autocomplete to colour_eyes.
However, for grey_eyes, white_eyes, pink_eyes, black_eyes, and aqua_eyes, however, typing colour_e autocompletes to earrings because of the various colour_earrings -> earrings aliases. Personally, I find this really annoying, as I frequently type for example "pink_e", then hit tab and end up with earrings instead of pink_eyes. An alias which is no longer necessary shouldn't dominate autocomplete over something as common and basic as pink_eyes.
I don't think there's a high risk of people creating these colour_earrings tags again, so it shouldn't be much work to keep them dead. I can add "Just use earrings instead" wikis to the colour_earrings tags.