By Louise Parry & Justin Dealey
BBC News, Luton
It was Coldplay's international breakthrough hit and remains one of their best-known numbers: Yellow.
But could they change the lyric, just for one night to appease football fans with local rivalries?
The band is headlining Radio 1's Big Weekend in Luton in May, which is home to orange-kitted Luton Town, while just down the M1, Watford play in yellow.
Some Lutonians are suggesting the Y-word could be changed. The BBC has asked the band for its reaction.
Luton resident Bex Jones suggested Coldplay "should change 'yellow' to 'orange and blue'".