:root {
    --theme-bg-color:           #292929;
    --theme-bg-hover-color:     #505050;
    --theme-link-color:         #3b5f82;
    --theme-link-visited-color: #5a4a6e;

    --theme-link-hover-bg-color:          rgba(70, 135, 200, .15);
    --theme-link-underline-color:         rgba(59, 125, 193,  .3);
    --theme-link-underline-visited-color: rgba(68, 68, 68, 0.3);
    --theme-preview-hover-bg-color:       rgba(167, 167, 167, 0.7);
    --theme-tab-active-color:             var(--theme-bg-color);
}