YOU SAID:

the boy was all dressed in blue

INTO JAPANESE

少年はすべて青い服を着ていた

BACK INTO ENGLISH

The boys were all dressed in blue

INTO JAPANESE

男の子たちはみんな青い服を着ていた

BACK INTO ENGLISH

All the boys wore blue clothes

INTO JAPANESE

男の子はみんな青い服を着ていた

BACK INTO ENGLISH

All the boys wore blue clothes