[Feature][UI Next][V1.0.0-Alpha] Added theme color modification field.

[labbomb]

Purpose of the pull request

Please refer to the main issue #8589.

Brief change log

Verify this pull request

This pull request is code cleanup without any test coverage.

(or)

This pull request is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.32%. Comparing base (d7f7686) to head (ff49897).
⚠️ Report is 2886 commits behind head on dev.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #8596      +/-   ##
============================================
+ Coverage     45.25%   45.32%   +0.06%     
- Complexity     4041     4060      +19     
============================================
  Files           690      696       +6     
  Lines         26873    26978     +105     
  Branches       2884     2889       +5     
============================================
+ Hits          12161    12227      +66     
- Misses        13564    13600      +36     
- Partials       1148     1151       +3     

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[songjianet]

LGTM