[Chimera-users] configuration file for chimera

Dear chimerians, Sorry if this question has been asked before. Where can i fix the default parameters for chimera. I explored the preferences option in favourites menu and set chose some preferences. In addition to that I want to the following like setting the color of carbon atoms as green as default setting the color of hydrogen atoms as white as default setting some macros setting the command line option when the chimera starts up (every time i go to favourites and click command line to invoke it) and other settings something like the configuration file used for vmd (.vmdrc ). Thanks in advance, Bala