Hi ffsandsbach,
To change the bar color, you can use the following CSS code:
.t4-offcanvas .t4-off-canvas-header {
background-color: #2e3d96;
}
About the menu not opening on mobile, I think the site name is big and overlays the menu icon, you can try the following CSS Code:
@media (max-width: 480px) {
.navbar-brand.logo-text .site-name {
font-size: 16px;
}
}
If you still face this issue, you can send me a screenshot for further checking.