YOU SAID:

so there i was blue on black

INTO JAPANESE

そこで私は黒に青がありました

BACK INTO ENGLISH

So I had blue on black

INTO JAPANESE

だから黒に青があった

BACK INTO ENGLISH

So there was blue in blue

INTO JAPANESE

だから青に青があった

BACK INTO ENGLISH

So blue was blue

INTO JAPANESE

青は青だった

BACK INTO ENGLISH

Blue was blue

INTO JAPANESE

青は青だった

BACK INTO ENGLISH

Blue was blue