Greetings all I am trying to change the color scheme Coot uses when opening PDB files. When I open two seperate PDB files in the same session I would like to change the colors such that there is a clear and distinct difference between the two chains (coot does not always do this), ie red and green instead of Coot offering me green and light green. I am comparing two different maps which are quite similar so the distinction is needed. Any ideas? James