I know that most of "why" questions don't make much sense as far as linguistics are concerned but I'll ask anyway. I know that き means a tree. いろ means color. It doesn't take a genius to guess that ...
This question about colours got me thinking: Why, and how, did オレンジ come to replace 橙【だいだい】 to refer to the colour orange? It seems weird to me that a 外来語【がいらいご】(word taken from a foreign language) ...