message: fix default color in uniform theme
diff: /**
  - * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
  + * Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
  */
  @@ -9,6 +9,7 @@ import { Color } from 'mol-util/color';
  import { ParamDefinition as PD } from 'mol-util/param-definition'
  import { ThemeDataContext } from '../theme';
  import { TableLegend } from 'mol-util/color/tables';
  +import { defaults } from 'mol-util';
  const DefaultColor = Color(0xCCCCCC)
  const Description = 'Gives everything the same, uniform color.'
  @@ -22,7 +23,7 @@ export function getUniformColorThemeParams(ctx: ThemeDataContext) {
  }
  export function UniformColorTheme(ctx: ThemeDataContext, props: PD.Values<UniformColorThemeParams>): ColorTheme<UniformColorThemeParams> {
  - const color = props.value || DefaultColor
  + const color = defaults(props.value, DefaultColor)
  return {
  factory: UniformColorTheme,
  