QB Issue Resolution:

Open the invoice, click on the picture of the printer above Print on the Main tab, and uncheck “Shade alternate table rows”. You will need to do this just once, but for every form that prints shaded table rows.

Resolution for Issue 'How do I remove the grey background bars from forms?' available: Yes (Solved).
Source: Intuit Community forum.

How do I remove the grey background bars from forms?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Invoice
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Error Recovery for Invoice [Canada]
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