message: remove getColorFromScheme in favor of CategoricalColorNamespace.getScale() for histogram
diff: @@ -6,7 +6,7 @@ import { chartTheme } from '@data-ui/theme';
  import { LegendOrdinal } from '@vx/legend';
  import { scaleOrdinal } from '@vx/scale';
  import WithLegend from './WithLegend';
  -import { getColorFromScheme } from '../modules/colors';
  +import { getScale } from '../modules/CategoricalColorNamespace';
  const propTypes = {
  className: PropTypes.string,
  @@ -48,10 +48,11 @@ class CustomHistogram extends React.PureComponent {
  yAxisLabel,
  } = this.props;
  + const colorFn = getScale(colorScheme).toFunction();
  const keys = data.map(d => d.key);
  const colorScale = scaleOrdinal({
  domain: keys,
  - range: keys.map(key => getColorFromScheme(key, colorScheme)),
  + range: keys.map(colorFn),
  });
  return (
  