"The purple bird sings."

Translation: 보라색인 새가 노래합니다.

[LiKenun]

This probably won’t trip most people, but:

노래해요 (sing) ≠ 노래요 (yellow)

They come from 노래하다 and 노랗다 respectively.

[APLin1]

Good clarification and still somewhat trippy!

[LeeQuatorze]

putting 'the' in every nouns wouldn't be so natural; Korean grammar is very different to european grammar so a natural sentence in Korean might not sound so natural in English, but you must leave it that way. This is because '보라색인 새' could mean a specific bird but it could imply the meaning that 'if a bird is purple, it sings.' The idea of trying to translate Korean phrases in one type of English phrase is misguided, as I say as native Korean myself.

[OKAMOTO_Yusuke]

I suppose "보라색인 새가 노래해요" would be accepted as well. Reported on Nov. 5, 2017.

[Iron_Venema]

April 6th 2019, 보라색 새가 노래해요 is still wrong.... So frustrating.

[ConnonThom]

I might have missed this, what is the 인 at the end of 보라색인 signifying?

[oee16]

Descriptive verb:
보라색-이다 = be of purple color = be purple.

Adjective form (present tense):
보라색-이 + -ㄴ =
보라색-인 = that is purple

보라색인 새 = bird that is purple = purple bird.

Note: "-색이다" (be of color) is used to describe all colors.

However,

Neutral colors (black and white) and primary colors (blue, red and yellow) have their own sets of verbs, hence adjectives.

까맣다 = be black
까만 = black

하얗다 = be white
하얀 = white

파랗다 = be blue
파란 = blue

노랗다 = be yellow
노란 = yellow

빨갛다 = be red
빨간 = red