chore: Replace hex colors in constants file with tokens

[brianacnguyen]

Description

• Replace hex colors in constants file with tokens

Related issues

Fixes: #8331

Manual testing steps

1. N/A

Screenshots/Recordings

N/A

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've linked related issues
• I've included manual testing steps
• I've included screenshots/recordings if applicable
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.
• I’ve properly set the pull request status:
  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[georgewrmarshall]

LGTM! Ideally this PR should have screenshots of the changes so we can be 100% confident there are no visual regressions

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (64b7cb5) 39.83% compared to head (c6023e5) 40.33%.
Report is 45 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8330      +/-   ##
==========================================
+ Coverage   39.83%   40.33%   +0.50%     
==========================================
  Files        1233     1236       +3     
  Lines       29821    29976     +155     
  Branches     2840     2881      +41     
==========================================
+ Hits        11880    12092     +212     
+ Misses      17252    17188      -64     
- Partials      689      696       +7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud