chromium/src/third_party/blink/perf_tests/speedometer/resources/todomvc/vanilla-examples/es2015-babel-webpack/src/app.css

.toggle-graph {
  float: left;
  margin-left: 16px;
  cursor: pointer;
  position: relative;
  z-index: 1;
}
.toggle-graph svg {
  height: 20px;
  width: 20px;
}
.toggle-graph svg path {
  fill: #777;
}

.toggle-graph.active svg path,
.toggle-graph:hover svg path,
.toggle-graph:focus svg path {
  fill: black;
}