Added Dark Mode Stylization for Gened Viewer

[jhtl99]

Description

Closes #200

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Test A
• Test B

Test Configuration:

• Node.js version:
• Python version:
• Desktop/Mobile:
• OS:
• Browser:

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[vercel]

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[xavilien]

LGTM, nice work!