Printing issue (colors)

After making a custom theme, the colors are okay when viewed,
but after exporting to pdf or trying to print, the colors disappear (like row background colors)

2

Manager does not support all attributes in HTML or Liquid. They render on screen because your browser and/or operating system do.

But this is important,
We are trying to make same invoices as our firm, (With the style and graphics),

Background row colors is the only thing remaining.

I hope this will be settled soon,

Best regards