I am using the parameter "default_window_title_color = # 0c4d01", but it has no effect on the finance window for example.
look at the picture:(https://www.mediafire.com/convkey/c7b1/8o2k2v3dgx994nx6g.jpg)
Because all windows that show player specific information (stop, list, schedules) will have player color in their window bar. That is to avoid confusion.
Usp my mistake, I made player changes, but I think I didn't notice the color change in those windows. :p