Lol dude you even wrote a tutorial on this...NextGen1 appended it on how to do it programmatically
Here:
[php]
'Note MyForm is the name of your form
'Note ColorTable is either Blue , Black, Or Silver
RibbonPredefinedColorSchemes.ChangeOffice2007Color Table(myForm, DevComponents.DotNetBar.Rendering.eOffice2007Color Scheme.Blue)[/php]
Hope this helps