message: Give build scripts a different color.
diff: @@ -390,11 +390,16 @@ impl<'a, 'cfg> Timings<'a, 'cfg> {
  let width = (PX_PER_SEC * unit.duration).max(1.0);
  let dep_class = format!("dep-{}", i);
  + let class = if unit.unit.mode.is_run_custom_build() {
  + "unit-block-custom"
  + } else {
  + "unit-block"
  + };
  writeln!(
  f,
  " <rect x=\"{:.1}\" y=\"{}\" width=\"{:.1}\" height=\"{}\" \
  - rx=\"3\" class=\"unit-block\" data-dep-class=\"{}\" />",
  - x, y, width, BOX_HEIGHT, dep_class,
  + rx=\"3\" class=\"{}\" data-dep-class=\"{}\" />",
  + x, y, width, BOX_HEIGHT, class, dep_class,
  )?;
  let draw_dep_lines = |f: &mut File, x, units| -> CargoResult<()> {
  for unlocked in units {
  @@ -743,6 +748,10 @@ h1 {
  fill: #95cce8;
  }
  +.unit-block-custom {
  + fill: #f0b165;
  +}
  +
  .unit-block-codegen {
  fill: #aa95e8;
  pointer-events: none;
  