AMinColor (at the min threshold) and AMaxColor (at the max threshold). (Available since v2.34.0.)
| ARange | WideString. Sqref string, e.g. 'A1:A10'. |
| AMinColor / AMaxColor | LongWord. Gradient endpoint colours in Delphi BGR format (R in the low byte). |
| AMinKind / AMaxKind | TXLSCfValueKind. Threshold types — see TXLSCfValueKind. |
| AMinValue / AMaxValue | WideString. Threshold literal; ignored for kinds that auto-detect. |
Sheet.AddCondFormatColorScale2('A1:A10', $00FFFFFF, $0000FF00);