Improved accessibility for static labels and chips

[Bonsai8863]

Proposed changes

• Changed text color for most labels/chips to pure black/white to improve readability
• Added monochromatic setting in user profile to make labels/chips completely grayscale

Related issues

• Implement mono-chrome (single color) mode (in settings) for labels and entity types #6609

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

I didn't write auto tests since they are mostly style changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.13%. Comparing base (68efd7f) to head (29b2692).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8239      +/-   ##
==========================================
- Coverage   66.14%   66.13%   -0.01%     
==========================================
  Files         597      597              
  Lines       60382    60382              
  Branches     6192     6191       -1     
==========================================
- Hits        39937    39932       -5     
- Misses      20445    20450       +5     

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