Add Retro Terminal theme - classic green on black aesthetic

[shulman33]

Discord username (optional)

N/A

Name of theme

Retro Terminal

How Has This Been Tested?

Yes, I have run the python script:

python3 ./scripts/gen_theme_previews.py standard

The script successfully generated the preview thumbnail (retro_terminal_yaml.svg) without errors. The theme has also been tested locally in Warp terminal to verify all colors are visible and maintain the intended retro aesthetic.

Notes

This theme does not include any custom background images. It uses a pure black background (#000000) with phosphor green text to achieve the classic CRT monitor aesthetic.

The theme features:

• Classic green-on-black terminal color scheme
• All ANSI colors use green spectrum variations for monochrome phosphor display feel
• Optimized visibility with darker greens for "black" colors that remain distinguishable on the black background
• Inspired by vintage Unix terminals and retro computing aesthetics