Very much appreciate F2thaK's work on this!

I'm trying to install some of his UI mods on my N9, but don't want everything, only a dark theme for the dialer, recent calls, contacts and calendar. I understand that I can simply modify the css files in each folder, but want to confirm if I'm on the right track.

Instead of installing the theme, can I just replace the files in the base theme folder with the ones in this theme pack? It looks like it would be under "call-history", "call-ui", "libdialerui0", and I'm not sure where to find the calendar folder.

What I'm wondering is:
1. Do I need to also edit constants.ini, and how?
2. What about index.theme?
3. Does anything have to be changed in the blanco theme (I currently have no other themes installed, just the dark messages from N9QTweak)
4. If something goes wrong, can I just replace the original backups into their folders and restart?

I don't want to change anything else.

Any guidance would be appreciated!