User:This, that and the other/NavFrame and list-switcher

Here is a view-switcher - we mainly use these for derived/related terms lists:

And here is a NavFrame - mainly used for translations and inflection tables:

These frequently appear in close proximity in our entries, but they visually clash!

• One is coloured, one is grey
• One is rounded off, the other is angular
• One is flat without any outline, the other has two outlines (grey border and white padding) and looks boxy
• The "show/hide" buttons have different text and the font sizes don't match!

They don't even blend in very well with the look and feel of any of MediaWiki's skins.

Please view in light mode only - not dark mode optimised at this time

...while matching NavFrame header color to the interior background color of the box

NOTE: bottom curved borders would only apply when the NavFrame is collapsed, not when it is open. I can't make that happen in this simple mockup