How to make menu font color same on all pages

Please post a link to your site.

this post has white menu, which makes not readable with light background
https://smarthomeworks.com/troubleshooting-the-most-common-issues-with-furnace/

i want to make it blue as on other pages

If your theme has a custom CSS feature, use that to add this CSS. If not, install the plugin “Simple Custom CSS”.

Here’s the CSS:

.nav.main_menu > ul > li > a {
    color: #127cbf;
}

If that doesn’t solve it, I suggest you contact the theme developers:

https://themeforest.net/item/bridge-creative-multipurpose-wordpress-theme/7315054/support

If your theme has a custom CSS feature

Found this, I should have guessed. Thank you.