Hi,

In Odoo 17, PDF reports are generated using QWeb templates and rendered via wkhtmltopdf. To change the complete background color of a report, you need to extend the report’s QWeb template and apply CSS styles that wkhtmltopdf can understand.

Option 1: Locate or inherit the report template

If it’s a standard report (like invoice, sale order, etc.), find the QWeb template in the corresponding module (e.g., account.report_invoice_document). For custom reports, inherit your template.

<template id="report_invoice_background" inherit_id="account.report_invoice_document">

    <xpath expr="//div[@class='page']" position="attributes">

        <attribute name="style">background-color:#f0f0f0; color:#000000;</attribute>

    </xpath>

</template>

Option 2: Use CSS for full-page background

You can also add a CSS block to target the whole page of the report:

<template id="report_invoice_background" inherit_id="account.report_invoice_document">

    <xpath expr="//t[@t-name='account.report_invoice_document']" position="before">

        <style>

            @page {

                background-color: #f0f0f0;

            }

            body {

                background-color: #f0f0f0 !important;

            }

            .page {

                background-color: #f0f0f0 !important;

                min-height: 100%;

            }

        </style>

    </xpath>

</template>

Update your module (-u module_name).

Regenerate the report.

For more information:

* https://www.cybrosys.com/blog/how-to-customize-existing-reports-in-odoo-18

* https://www.cybrosys.com/blog/how-to-customize-existing-reports-in-odoo-17

Hope it helps

Hello,

Yes you can, by changing it inside the settings menu. First you need to go to Settings > Activate Debug menu. then, go back to settings > technical > views and search for report_invoice_document

inside the box you can add <div style="background-color: yellow;">​ under the t-call​ element. Dont forget to add </div>​ closing bracket at the bottom like this image

However, this color change will affect the inner box of the invoice only. You will need to add another element code to other files, for example the external_layout_standard​ to change the outer line of the invoice report boxes.

I'd recommend to use the paper with exact color you want instead, as its will save you some printer ink supplies

Hope this helps!

Altela (altelasoftware.com)