upcoming: [M3-8755, M3-6700] - Add global colorTokens to theme and replace one-off hardcoded white colors

[pmakode-akamai]

Description 📝

Add global colorTokens to the theme and replace one-off hardcoded white color values.

• A follow-up PR will address the replacement of hardcoded black color values with the token.

[!Note] Global tokens are theme agnostic

Changes 🔄

• Added global colorTokens to the theme
• Replaced one-off hardcoded white color values:
  • #fff and #ffff with theme.colorTokens?.Neutrals.White

Target release date 🗓️

N/A

Preview 📷

No visual changes.

How to test 🧪

Verification steps

• Ensure everything builds properly
• Ensure No visual changes.
• Check that all #fff and #ffff values have been replaced.

As an Author I have considered 🤔

Check all that apply

• [ ] 👀 Doing a self review
• [x] ❔ Our contribution guidelines
• [x] 🤏 Splitting feature into small PRs
• [x] ➕ Adding a changeset
• [ ] 🧪 Providing/Improving test coverage
• [ ] 🔐 Removing all sensitive information from the code and PR description
• [ ] 🚩 Using a feature flag to protect the release
• [ ] 👣 Providing comprehensive reproduction steps
• [ ] 📑 Providing or updating our documentation
• [ ] 🕛 Scheduling a pair reviewing session
• [ ] 📱 Providing mobile support
• [ ] ♿ Providing accessibility support