Default [Q] How to make a CM7 Theme Chooser Theme?

Hi Guys I have made in the past a few themes for theme chooser but it was strictly ICS/JB. I have since downgraded phones (dont ask why). My current device is an HTC Evo 4G. The ROM I am currently running is [ROM]CyanMobile v5.5/5.5-Mega[The Continuum][ViPER Audio][12/04/2013] found Here.
I would like to get back into theming again as I have never made a theme or theme template for CM7, if someone could point me in the correct direction I would possibly like to make a CM7 theme template if there already is not one as this ROM is explosively HUGE. Any feedback would be very much appreciated. Again, I want to make a theme for CM7 Theme Chooser.