change icon colors in dark mode

[mshokoya]

Pull Request

Related Issues: #275

Fixes #(issue number)

275

Description: change icon bg colour and fill in dark mode to #335467 & rgba(19,43,57,1) respectively

Checklist:

• [x] I have tested my changes.
• [x] My code follows the project's coding standards.
• [ ] I have updated the documentation (if applicable).

Screenshots:

before

after

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