How to add border to individual image

Hi all,

I performed following step adding border to a individual image

On visual click the image
see following screenshot
http://ubuntuone.com/1nvFwPSXJha80XJjJvvptQ

-> again click "Edit Image" -> again click "Advanced Settings
see following screenshot
http://ubuntuone.com/7TfGwLAbj6zokvLviPs0UV

add "5" to border box
see following screenshot
http://ubuntuone.com/3NMHp3o8jz5IsRBsdj9osB

-> again click "update"

A solid black border added. Please advise how to create a white or a transparent border of 5px?

TIA

satimis