Aha!
I'm starting to get much closer ..
As I continued to reverse-engineer, I discovered that SW_VTicker-L_Carnum has overrides for Background, with a Data Converter pointing to the script OverrideClassColor.cs, and a DataBinding to classcolor
Please let me know if this is the best approach:
I duplicated L_Carnum so the top widget had a width of 4x40, and kept the background overrides, and the duplicated widget below, i kept at 40x40, and removed the color binding, but kept the carnum label
In the screenshot, I haven't changed the font colour yet, but I think i'm going to add one more subwidget to load my own custom background as a PNG below that carnum ...
Am i doing too many steps to get this end result?
Thanks!
-Jeremy