Consider changing (removing) QR code colours.

[MikuroK]

Hi, just wanted to point out that the "login with qr code" feature is more difficult to scan due to the colours used.

I have attached a picture demonstrating this by making a black/white version of the QR code. The barcode may be easier or harder scan depending on many factors such as scanning software, camera quality, the kind of screen it's displayed on et cetera, but intentionally reducing the contrast of the original image doesn't help.

Thank you.