rspamd/interface/css/d3evolution.css

.d3evolution svg {
    background-color: white;
}
.d3evolution .chart-title {
    font-size: 17px;
}
.d3evolution .y.label {
    font-weight: normal;
}
.d3evolution .grid .tick {
    stroke: lightgrey;
    shape-rendering: crispEdges;
}
.d3evolution .axis,
.d3evolution .legend {
    font-size: 13px;
}
.d3evolution .axis path,
.d3evolution .axis line {
    fill: none;
    stroke: grey;
}
.d3evolution .legend circle {
    stroke-width: 2px;
}
.d3evolution .path-null{
    fill: steelblue;
    fill-opacity: .1;
}