TextArea.SelectionTextColor
From Xojo Documentation
Property (As Color )
aTextArea.SelectionTextColor = newColorValue
or
ColorValue = aTextArea.SelectionTextColor
New in 2019r2
Supported for all project types and targets.
or
ColorValue = aTextArea.SelectionTextColor
New in 2019r2
Supported for all project types and targets.
Used to get and set the text color of the selected text.
Notes
When used in an unstyled TextArea, it changes the color of all the text in the TextArea.