message: Inline and remove `highlightColor` variable
diff: @@ -23,10 +23,9 @@ static void drawItem(Renderer& renderer, StructureListBox::StructureListBoxItem&
  const auto structureState = item.structure->state();
  const auto& structureColor = structureColorFromIndex(structureState);
  const auto& structureTextColor = structureTextColorFromIndex(structureState);
  - const auto highlightColor = structureColor.alphaFade(75);
  // draw highlight rect so as not to tint/hue colors of everything else
  - if (highlight) { renderer.drawBoxFilled(rect, highlightColor); }
  + if (highlight) { renderer.drawBoxFilled(rect, structureColor.alphaFade(75)); }
  renderer.drawBox(rect.inset(2), structureColor);
  