Hi Syabab,
There won't be settings for each button styling. Your other alternative is to use custom css.
#es .o-tabs--stacked .o-tabs__item.active > .o-tabs__link {
border-right: 2px solid #4A90E2;
}
The border color around the
New Page button is dependent on the button color, so it should be red color as well, not blue. Can you provide me the link to the page so I can examine your button?
If your red button's border color is showing blue during hovering, can you try the following custom css?
#es .btn-es-primary:hover {
border-color: rgba(78,230,200, 0) !important;
}