Color expression in Japanese, why some with い, some with 色 and some with nothing? we say: 赤い、白い、青い、黒い ----- that is totally fine, I can understand that. But why do we say 緑 (i.e. there is no "い") ? is this because they all end up with the pronunciation of "i"? and I don't understand why do we put 色 after some colors: i.e 銀色、金色、茶色 and オレンジ色 By the way, オレンジ is English --- any reason not to just say 橙(色)? Japanese is so interesting --- I keep wondering why why and why .....