How to change the theme color on your site

Please refer our document to change your theme color

http://themes.magesolution.com/unero/docs/m2/index.html#st-color-default

Also you can use custom style

https://www.magesolution.com/themes/claue/docs/m2/index.html#custom-style

Please note: For both functions, you need to choose the proper storeview in advance, then please clear all the cache (admin and server), 2-3 times. Afterward, you can check it again in your incognito browser mode