Dark Mode calendar picker too dark

[skalika]

Module

Dark Mode v16

Describe the bug

Dark mode on v16 calendar picker is too dark and choose date is dificult.

To Reproduce

16.0.1.3.2

Steps to reproduce the behavior:

1. Change to dark mode
2. Choose any module and create record that require date to be choosed

Expected behavior
A clear and concise description of what you expected to happen.

Additional context
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