YOU SAID:

My floor board is white, red and pink because i accidentally spilled tons of paint on it.

INTO JAPANESE

うちの床板は誤って大量のペンキをこぼしてしまったので、白、赤、ピンクになっています。

BACK INTO ENGLISH

My floorboards are white, red, and pink because I accidentally spilled a lot of paint on them.

INTO JAPANESE

うちの床板は、うっかり大量のペンキをこぼしてしまったので、白、赤、ピンクになっています。

BACK INTO ENGLISH

My floorboards are white, red, and pink because I accidentally spilled a lot of paint on them.