HotXLS Docs

Color property

Returns or sets the cell shading color of the range. Use the RGB function to create a color value. Read/write LongWord.
Setting Color on the BIFF8 path writes the exact RGB through the XFExt $087D rich-color side record (Excel 2007+ reopens the workbook with the literal RGB) and a best-match indexed icv on the XF wire (legacy Excel 97-2003 readers see the 56-color palette approximation). The XFExt side-table is also consulted on read, so cells coming back in from Excel surface their original RGB rather than the palette approximation.
For theme-based addressing use the companion SetThemeColor / SetPatternThemeColor methods, which encode an Office theme idx + tint into the same XFExt slot so Excel re-tints the cell when the workbook theme palette changes. See Classic XLS color model for the overall RGB / index / theme decision tree.

Syntax

property Color: LongWord;

Example

This example sets the color of the range A1:C10 interior to red.

Workbook.Worksheets[1].Range['A1', 'C10'].Interior.Color := xlRed;