To remove the glow, you can set box-shadow to none for default, primary and danger buttons on hover
.btn.btn-default, .btn.btn-primary, .btn.btn-danger {
.discourse-no-touch & {
&:hover, &.btn-hover {
box-shadow: none;
}
}
}
To also remove it from navigation bars (including the main one)
.nav-pills, .admin-controls .nav-pills {
>li>a:hover, >li.active>a, >li>a.active {
box-shadow: none;
}
}
// On mobile only
.nav-pills > li.navigation-toggle {
box-shadow: none;
}
To change the background color of the topic editor, I suggest you look at the theme’s source code and search for where the $bios sass variable is used. For example, to change the background color of the composer to a red color
#reply-control {
background: red;
}
If you do that, you probably also want to change the composer popup’s background as well (it pops up when you start typing and doesn’t show up on mobile)
// On desktop only
#composer-popup {
background: red;
}