Hi there,
1. Buttons on the static page are styled in the Block editor i made a quick video to show how:
2. Is this the Read More button on the Blog page ? If so that is defined in Customizer > Colors > Buttons
3. The navigation phone button uses this CSS – go to Customizer > Additional CSS and look for:
.main-navigation:not(.slideout-navigation) .main-nav li.nav-button a {
border: 2px solid rgba(255,170,0,1.0);
color: #ffffff;
line-height: 38px;
padding: 0px 16px;
margin-top: 6px;
margin-left: 24px;
-webkit-transition: all 500ms ease-in-out;
transition: all 400ms ease-in-out;
}
You need to change the rgba(255,170,0,1.0);
value – you can replace it with another RGBA or Hex color