[wp-trac] [WordPress Trac] #53090: Admin color schemes don't work in RTL

[WordPress Trac]

#53090: Admin color schemes don't work in RTL
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 Reporter:  tomjcafferkey             |      Owner:  (none)
     Type:  defect (bug)              |     Status:  new
 Priority:  normal                    |  Milestone:  Awaiting Review
Component:  General                   |    Version:
 Severity:  normal                    |   Keywords:
  Focuses:  css, rtl, administration  |
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 **Steps to replicate**
 * Install [Page Optimize](https://wordpress.org/plugins/page-optimize/)
 plugin
 * Change your admin color scheme in `/wp-admin/profile.php` to a non-
 default scheme
 * 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.wordpress.org/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.wordpress.org/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.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53090>
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