Apologies for starting a discussion for this, but comments have too low a character limit. I have it within my means to search files by contents rather than name. Here's what a search for the word "colour" in the items folder:

unpacked\items\armors\backitems\simplecape\simplecape.back
unpacked\items\armors\biome\colorful\crayonblueback\crayonblueback.back
unpacked\items\armors\biome\colorful\crayongreenback\crayongreen.back
unpacked\items\armors\biome\colorful\crayonorangeback\crayonorange.back
unpacked\items\armors\biome\colorful\crayonpurpleback\crayonpurpleback.back
unpacked\items\armors\biome\colorful\crayonredback\crayonredback.back
unpacked\items\armors\biome\colorful\crayonyellowback\crayonyellowback.back
unpacked\items\armors\decorative\hats\rainbowhood\rainbowhood.head
unpacked\items\generic\crafting\glowfibre.item
unpacked\items\generic\crafting\rainbowwood.item
unpacked\items\generic\dyes\blackdye.augment
unpacked\items\generic\dyes\bluedye.augment
unpacked\items\generic\dyes\browndye.augment
unpacked\items\generic\dyes\dyeremover.augment
unpacked\items\generic\dyes\greendye.augment
unpacked\items\generic\dyes\greydye.augment
unpacked\items\generic\dyes\orangedye.augment
unpacked\items\generic\dyes\pinkdye.augment
unpacked\items\generic\dyes\purpledye.augment
unpacked\items\generic\dyes\reddye.augment
unpacked\items\generic\dyes\whitedye.augment
unpacked\items\generic\dyes\yellowdye.augment
unpacked\items\materials\bamboo.matitem
unpacked\items\materials\candyblock.matitem
unpacked\items\materials\jellyblock.matitem
unpacked\items\materials\matterblock.matitem
unpacked\items\materials\moondust.matitem
unpacked\items\materials\neonblock.matitem
unpacked\items\materials\rainbowwoodblock.matitem
unpacked\items\materials\redtoyblock.matitem
unpacked\items\tools\painttool.painttool


Please let me know if you want other folders searched or any other 'typos' hunted down.