MediaWiki:Common.css

:root {
    --rct-indian-red: #b34f4f;
    --rct-light-grey: #839797;
    --rct-light-grey-lighter: #9fafaf;
    --rct-light-grey-darker: #5b7373;
    --rct-dark-grey: #3f5353;
}

body.skin-vector
{
    background-color: var(--rct-indian-red);
}

body.skin-vector #mw-page-base
{
    background-color: var(--rct-indian-red);
    background-image: none;
}

/* Tabs like Main page, Discussion, etc. */
body.skin-vector ul.vector-menu-content-list li
{

}

/* Navigation boxes on the left */
body.skin-vector #mw-panel nav
{
    background-color: var(--rct-light-grey);
    border: 1px solid;
    border-top-color: var(--rct-light-grey-lighter);
    border-left-color: var(--rct-light-grey-lighter);
    border-right-color: var(--rct-light-grey-darker);
    border-bottom-color: var(--rct-light-grey-darker);
    padding-top: 0;
}

body.skin-vector #mw-panel nav + nav
{
    margin-top: 15px;
}

body.skin-vector #mw-panel nav h3
{
    height: 12px;
    margin: 0;
    border: 1px solid;
    border-top-color: var(--rct-light-grey-darker);
    border-left-color: var(--rct-light-grey-darker);
    border-right-color: var(--rct-light-grey-lighter);
    border-bottom-color: var(--rct-light-grey-lighter);
    background-color: var(--rct-dark-grey);
    color: white;
    font-weight: bold;
    text-align: center;
    background-image: none;
    line-height: 12px;
}