Archivist: add color palettes for styles

[karmatosed]

This is an issue to start creating the color palettes for each default theme and styles.

The idea is to have a style per default theme and starting with color schemes is a good place to begin.

[MaggieCabrera]

Let's open different PRs for each variation:

• [ ] Twenty Twenty-Four
• [ ] Twenty Twenty-Three
• [ ] Twenty Twenty-Two
• [ ] Twenty Twenty-One
• [ ] Twenty Twenty
• [ ] Twenty Nineteen
• [ ] Twenty Seventeen
• [ ] Twenty Sixteen
• [ ] Twenty Fifteen
• [ ] Twenty Fourteen
• [ ] Twenty Thirteen
• [ ] Twenty Twelve
• [ ] Twenty Eleven
• [ ] Twenty Ten