Adjective/Number + 色
色 (sè) means "color" and is used as a bound morpheme that combines with other characters to form color-related words. It appears in words like 颜色 (color), 红色 (red), and 五颜六色 (colorful). Unlike 颜色, which stands alone as a word, 色 is typically attached to another character.
你最喜欢什么颜色?
Nǐ zuì xǐhuān shénme yánsè?
What is your favorite color?
秋天的树叶变成了金黄色。
Qiūtiān de shùyè biàn chéng le jīnhuáng sè.
The leaves turned golden yellow in autumn.
这条街上的房子五颜六色的,特别好看。
Zhè tiáo jiē shàng de fángzi wǔ yán liù sè de, tèbié hǎokàn.
The houses on this street are colorful and really beautiful.