Main header menu navi - accent colour not applying

Hi, so far so good with beaver builder- especially for a non-tech person like me 8)…

I have set accent colour to blue in appearance > customize.
When I hover over sub-menu links and fixed menu links, the accent colour works.
But on the main menu, the accent colour does not work.
Please let me know how I can get it fixed…

(Note: not a techie so please specify the codes and exact file I need to change if changes are required…thanks!

Please ignore. I’ve managed to change it with CSS Hero. Thanks!