MediaWiki:WatercolorDark.css

ul {
     list-style-image: none;
}
.ambox {
     background-color: #454545!important;
}

body #mw-navigation #searchform #simpleSearch #searchInput {
    background-color: #252525 !important;
    border-color: #A2A9B1 !important;
}

.oo-ui-buttonElement-button {
    background-color: #353535 !important;
}

.oo-ui-tabSelectWidget-framed {
    background-color: #323232 !important;
}

.oo-ui-tabSelectWidget-framed .oo-ui-tabOptionWidget.oo-ui-optionWidget-selected {
    background-color: #656565 !important;
    color: #fff !important;
}

.oo-ui-tabSelectWidget-framed .oo-ui-tabOptionWidget .oo-ui-labelElement-label {
    color: #fff !important;
}

.oo-ui-textInputWidget .oo-ui-inputWidget-input {
    background-color: #353535 !important;
    color: #fff !important;
}

.mw-prefs-buttons {
    background-color: #323232 !important;
}

.oo-ui-buttonElement-framed.oo-ui-widget-disabled > .oo-ui-buttonElement-button {
    background-color: #151515 !important;
    border-color: #151515 !important;
}

.mw-message-box {
    color: #d7d7d8 !important;
}