One of their songs is called 「恋のABO」, which I loosely translate to "Love's ABO." The letters A, B, and O stand for the different blood types, as the Japanese have this idea that blood types determine personality, so complementary blood types mean a good love match...or something like that.
Okay, I didn't really do much research on the meaning behind the song -- all I know is it sounds like disco music and NewS gets to wear funny glasses when they perform it live.
Today I was inspired by one of those glasses (which I actually own).
A look comprised of green, yellow and violet.
I actually really love this song too. It's so bad but in an awesome disco way.