Бесплатный плагин NeoMessenger 2.1.0

// Заголовок
.nm-header {
    border-bottom: 1px solid #323C56;
    background-image: -webkit-linear-gradient(top, #3498db 0%, #2980b9 100%);
    background-image: -o-linear-gradient(top, #3498db 0%, #2980b9 100%);
    background-image: linear-gradient(to bottom, #3498db 0%, #2980b9 100%);
}
 
// Кнопки
#nm-composer .nm-submit {
    border: 1px solid #4386cc;
    background-image: -webkit-linear-gradient(top, #6a9ed6 0%, #4a89cf 100%);
    background-image: -o-linear-gradient(top, #6a9ed6 0%, #4a89cf 100%);
    background-image: linear-gradient(to bottom, #6a9ed6 0%, #4a89cf 100%);
}
 
// Контакт
#nm-userlist li:hover,
#nm-userlist li.selected {
    color: #fff;
    border-bottom: 1px solid #167cac;
    border-top: 1px solid #2094ca;
    background-image: -webkit-linear-gradient(top, #1aaef3 0%, #0993d3 100%);
    background-image: -o-linear-gradient(top, #1aaef3 0%, #0993d3 100%);
    background-image: linear-gradient(to bottom, #1aaef3 0%, #0993d3 100%);
}
 

.conversation-body > .msg-content {
padding-top: 6px;
}

font-size: 13px;