why is the north side of a magnet red an dthe south blue??

Question: why is the north side of a magnet red an dthe south blue??
- Keywords:
  colour,
  magnet,
  pole
Asked by Lucy to Connor on 15 Jun 2015.
- Connor Macrae answered on 15 Jun 2015:
  
  There is no reason other than because we make them red and blue. A magnet has no specific colouration, but for our own reference some magnets have the north pole painted red to signify the positive end of the bar, and the south blue to signify the negative side.

Question: why is the north side of a magnet red an dthe south blue??