White background on QR code (for dark mode)

[timboniface]

Hi Dan,
This is a great plugin that we have used for years.
Are you able to add an update that provides some white background colour to the QR code? This is especially important for the increase in themes that incorporate a 'dark mode'. Inverting the colours would not work with the QR code.

[danmarsden]

HI @timboniface feel free to send through a PR - I don't currently use a theme with darkmode in my testing processes so it would be better for someone else to send something through for this. I'd probably only want to do this on the "latest" branch too, as some orgs may have styled that page using other local css that might involve a different background colour that still gives enough contrast.