Noun
いろ
何色がすきですか。
What color do you like?
ピーマンはうれるとみどり色から赤色になります。
Bell peppers turn from green to red when they ripen.
僕は色盲なので、赤色はオレンジ色に、青色は黒色のように見えます。
I’m color blind, so my reds appear orange and my blues appear black.
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it uses the kun'yomi reading. This is the reading you learned with the kanji, though, so enjoy.