Primitive elvish
kwil
root. colour, colour, color
Sindarin
crui
noun. colour
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Early Primitive Elvish
qili
root. *colour
Gnomish
crui
noun. colour
Qenya
laite
noun. colour
An unglossed root in the Qenya Lexicon of the 1910s with derivatives having to do with colour and adornments like ᴱQ. qile “hue, colour” and ᴱQ. qilya- “adorn, embellish, colour” (QL/77). It had derivatives in the contemporaneous Gnomish Lexicon as well such as G. cwil “hue, tint” (GL/28). As there are no better options for a generic words for “colour” in Tolkien’s later writing, I recommend positing a Neo-Eldarin root ᴺ√KWIL “colour” to preserve these Early Qenya words.