YOU SAID:

The cat was blue with the cold.

INTO JAPANESE

猫は風邪で青かった。

BACK INTO ENGLISH

The cat was cold and blue.

INTO JAPANESE

猫は寒くて青い。

BACK INTO ENGLISH

Cats are cold and blue.

INTO JAPANESE

猫は寒くて青いです。

BACK INTO ENGLISH

Cats are cold and blue.