[chimera-dev] read file by python script and color pdb file with script

I am having 2 coordinates in check file. I want to take/read them and paint my pdb file loaded in chimera. I have chimera in my ~/bin/ System specs: ubuntu 64 bit, 13.10, 4gb ram Below is the command I have used for script-chimera communication $ chimera64-1.8.1 --script "y.py check" -- Q6UXT6.pdb I am storing values in listu and want to use them for coloring my file loaded.     rc("color blue :"+listu[0]+"-"+listu[1]) This works well, if hard coded rc ("color red :55-86") I do not get any error. The particular protein length is not colored. attached 3 files. Kindly suggest, how do I proceed.   -- Regards Sariya