I wanted to throw this out there for anyone who might know. This is a partial answer to
archimense's post.
archimense found a list of all tags that iguidance.exe is reading from theme.ini. I took his list, and updated it a little. Can anyone fill in the rest?
DGRDC - known - Day Guidance Road Color
NGRDC - known - Night Guidance Road Color
STS - known - Street Name Font Size
RTC - known - Route Color
DMRBPC - known - Day Map Road Border Pen Color
NFC - known - Night Feature Colors
DFC - known - Day Feature Colors
STC - known - Screen Titlebar Color
MDFC - known - Max Funclass
FZL - known - Feet Zoom Levels
MZL - known - Meter Zoom Levels
- -
AZLC - ? - Active Zoom Level Count
BNCA - ? -
DMRC - guessing - Day Map Road Color
MBC - known - Map Background Color
MSR - ? -
NMRBPC - known - Night Map Road Border Pen Color
NMRC - guessing - Night Map Road Color
NPT - ? -
NPW - ? -
SBC - ? -
STW - ? -
This list is updated with input from thread.