Delphi DBGrids.pas Source-Code mods for Alternating Row Color

Alternating DBGrid Row Colors in Borland / Embarcadero Delphi
As I migrate some existing internal software from Delphi to Dart Language and HTML/SVG/CSS, I figured I would post some of my soon-to-be "legacy" Delphi source code online for anyone that may want to leverage it. In this particular case, I have some code I use to rather automatically determine a reasonable color-coordinated