Updated tabs font color

[tkakar]

Summary

This updates the font color in the tabular tabs to (#252938) for selected tab, and (#252938, 60%) for the unselected tabs. Previously the color was the default color.

Design Documentation/Original Tickets

CAT-789

Testing

Manually tested by inspecting the font color of selected and unselected tabs.

Screenshots/Video

Checklist

• [x] Code follows the project's coding standards
  • [x] Lint checks pass locally
  • [x] New CHANGELOG-your-feature-name-here.md is present in the root directory, describing the change(s) in full sentences.
• [ ] Unit tests covering the new feature have been added
• [x] All existing tests pass
• [ ] Any relevant documentation in JIRA/Confluence has been updated to reflect the new feature
• [ ] Any new functionalities have appropriate analytics functionalities added

Additional Notes

Please specify any additional information or context relevant to this PR.