Hello @evenlimamiller,
To change the color of the mob menu, please add below-given CSS by going to Admin Panel > Appearance > Customize > Additional CSS.
@media only screen and (max-width: 1023px){
#mobile-trigger i {
background-color: #96bc00;
}
}
Change the color as per your requirement.
Now to change the color of go to top button, go to Admin Panel > Appearance > Customize > Color Options > Go To Top Color Options and change the color as per your requirement.
Hope this helps.
Thank you.