TOTP button not tinted

[tobiasKaminsky]

• have custom theme color
• try to login with TOTP
• see wrong button color

@nextcloud/designers

[skjnldsv]

@juliushaertl @nextcloud/theming

[juliusknorr]

Still happens for non bright colors, as reported in #559

[tobiasKaminsky]

Still happens with NC17 beta1

[Tanja-4732]

Should this issue be migrated to https://github.com/nextcloud/twofactor_totp/issues?