niche/static/themes/common/niche.css

.new {
    background-color: lightyellow;
    border: 1px solid yellow;
    padding: 0.3em;
    font-size: small;
}

.meta {
    background-color: lightblue;
    border: 1px solid blue;
    padding: 0.3em;
}

.message {
    background-color: lightgreen;
    border: 1px solid green;
    padding: 0.3em;
}

.error {
    background-color: pink;
    border: 1px solid red;
    padding: 0.3em;
}

.wrong {
    background-color: pink;
    border: 1px solid red;
    padding: 0.3em;
}

.preview {
    background-color: #e0e0e0;
    border: 1px solid #101010;
    padding: 0.3em;
}