:root {
  --py3dtiles-blue: #3f7bad;
  --py3dtiles-light-blue: #d7e5f0;
  --py3dtiles-orange: #ff6500;
  --py3dtiles-light-orange: #ffe0cc;
  /* from darker to lighter */
  --py3dtiles-grey1: #fafafa;
  --py3dtiles-grey2: #f2f2f2;
}