I recently wrote below (simple) macro which changes the row colour of
a table from blue to yellow. Is it possible to define a custom colour
such as RGB (17, 33, 55). And if this is possible, how do I have to
rewrite this macro.

Help is appreciated. Thank you very much in advance.

Regards,

Andreas

Sub ChangeShading()

Dim oRw As Row

For Each oRw In ActiveDocument.Tables(1).Rows
  If oRw.Cells.Shading.BackgroundPatternColor = wdColorBlue Then
  oRw.Cells.Shading.BackgroundPatternColorIndex = wdColorLightYellow
  End If
Next
End Sub