What Is The Diference In Color Or Butabital, And Acetamimin,

what is the diference in color or Butabital, and Acetamimin, and the Butabital, and Acetaminin, and caff round tablets? the tablets are different now what is the diference in the two? I have migiraines, and I take the Butabital, Acetamin, caff. and they are light blue, and round. what is the diffierence in the other one that is oblong, and white?