Admin color schemes do not work in RTL

This was an issue reported by @tomjcafferkey in the WordPress Core Trac:

Steps to replicate

1. Install [Page Optimize](https://www.ads-software.com/plugins/page-optimize/) plugin
2. Change your admin color scheme in /wp-admin/profile.php to a non-default scheme
3. Go to /wp-admin/options-general.php and update your Site Language to an RTL language

What I expected to happen

My admin color scheme would be the one I updated it to.

What actually happened

Admin color scheme switched back to the default color scheme.

Additional information

We found out this is because there needs to be [extra data set](https://developer.www.ads-software.com/reference/functions/wp_style_add_data/) for RTL when enqueuing the stylesheet:

wp_style_add_data( 'colors', 'rtl', 'replace' ) fixes this when the site language is set to RTL

Additional RTL support documentation that recommends wp_style_add_data for RTL found [here](https://codex.www.ads-software.com/Right-to-Left_Language_Support).

This will also help maintain consistency as admin-menu stylesheet does include this additional data for RTL support when the Site Language is set to an RTL language.`

• This topic was modified 3 years, 7 months ago by Jonathan Desrosiers.

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