Add missing Tailwind palette colors

as of writing, these colors are missing from bevy's bevy_color tailwind palettes:
* taupe
* mauve
* mist
* olive

## What problem does this solve or what need does it fill?

adding this allow more easy access to good colors for ui theming

## What solution would you like?

Adding these so we are synced with tailwinds website

## What alternative(s) have you considered?

manually adding these colors per-project

Start in Bevy's bevy_color Tailwind palettes and compare the available colors with Tailwind's website. Add taupe, mauve, mist, and olive so the palettes are synchronized, then verify the project’s relevant color tests or checks if available.

Written by the indexing model from the issue text.