Hi, Could you please mention your template name? Thank you

Finatic

Its ok on my end https://prnt.sc/wfs4v1 Clear your Joomla and Browser cache

Why primary color on buttons won't change color then?

Template is green so primary color remains green too.

When you hover it then it looks like presets color https://prnt.sc/wfzfya

Ok it may work for :hover selector on menu, but primary color on buttons won't change their colors, besides choosing "Custom Style" on header color, even if I change its color, well just keeps taking its color from default.css

This framework is not doing its job, is not a cache problem here.