:root {
    --theme-bg-color:           #373b6e;
    --theme-bg-hover-color:     #36497b;
    --theme-link-color:         #4f548c;
    --theme-link-visited-color: #5d63a1;

    --theme-link-hover-bg-color:          rgba(79, 84, 140, 0.15);
    --theme-link-underline-color:         rgba(79, 84, 140, 0.3);
    --theme-link-underline-visited-color: rgba(91, 94, 128,  .3);
    --theme-preview-hover-bg-color:       rgba(79, 84, 140, 0.7);
}