Changing PDF invoice background and other changes

[kikutnik666]

Hi!.
I'm working on VM, I've change my frontend (lot of work) in graphics and some changes in scripts.
VM is quite good stuff and every day I know VM better and better.

But now I have problem and I don't know how to start, how to change anything... And the worst thing is the Internet- it's quite silent...
In my shop I generate PDF invoices and I'm printing them. I want some background or backgrounds. It wouldn't be a logotype or a signature.
PDF is in vertical orientation, and have 3 containers:

• top with logo, some text and informations about company
• main content with information about order, user, shipment and so on
• footer with map (I'm selling international bus tickets) and contact

Each of this sections have different background.
An I don't know how change it... I spent lot of hours to change layout, to change colors and I still don't know how to change background...

I don't want other component- I wrote android API for selling tickets (each driver has tablet with installed API) and I just want to change some colors- rest would be easy (i think....?)

Please help