Thanks for your answers, they're all pertinent to the question I've asked.
However, it's not really what I've been expecting, i.e. it's not the right question I've asked !
Can you tell whether this entitles to be considered as a banner or not ?
Portion of the banner at 1:1
Full banner (right-click and open image in new tab on your browser to see it at 1:1 scale)
I forgot a detail actually, its usage will be in a desktop application.