Accessibility: poor contrast in dark mode

[roiLeo]

Confirmation

• [X] My issue isn't already found on the issue tracker.
• [X] I have read the Subscan API documentation (if it seemed to be an API bug).

Affected Network(s)

All

Steps to reproduce

1. any network
2. toggle dark mode
3. profit

Expected output

I would like to have a nice contrast in dark mode too, be able to read text and see icons more easily

Actual output

Additional factoids or references