>Can I do something like this? I'm not having success with the syntax or object oriented references!
>If index = lastname
> this.column1.header1=rgb(255,0,0)

First, it should be this.column1.header1.BackColor=rgb(255,0,0)
Second, this particular syntax will work in case you address it this way from the Grid object.
You may use full hierarchy and address the header starting with the Form.

thisform.GridSearch.column1.header1.BackColor = rgb(255,0,0)



>
>OR
>
>in the header.click()
>just set the color
>and reset the other heading's colors? I just can't get the right syntax to refer to the other columns.

* Header.Click()
this.parent.parent.SetAll("BackColor", RGB(192,192,192), "Header") && reset all headers to grey backcolor.
* this.parent.parent relative to header means reference to the Grid object
this.BackColor = RGB(255,0,0) && set the current header backcolor to Red