.project-preview-4 {
    background: #dca9b5;
}

.project-preview-5 {
    background: #425663;
}

.project-preview-6 {
    background: #b88773;
}

.project-preview-4 .mini-window > div {
    background: #fff2f5;
}

.project-preview-5 .mini-window > div {
    background: #edf2f4;
}

.project-preview-6 .mini-window > div {
    background: #fff6ed;
}