Lightsome /(līt"sŭm)/

Light·some

Lightsome

a.
  1. Having light; lighted; not dark or gloomy; bright.
    White walls make rooms more lightsome than black.
  2. Gay; airy; cheering; exhilarating.
    That lightsome affection of joy.
    Happiness may walk soberly in dark attire, as well as dance lightsomely in a gala dress.