YOU SAID:

They're red they're white they're brown

INTO JAPANESE

彼らは赤だ 彼らは白だ 彼らは茶色だ

BACK INTO ENGLISH

they're red they're white they're brown

INTO JAPANESE

彼らは赤です 彼らは白です 彼らは茶色です

BACK INTO ENGLISH

they are red they are white they are brown

INTO JAPANESE

彼らは赤です 彼らは白です 彼らは茶色です

BACK INTO ENGLISH

they are red they are white they are brown