If you want a modern natural white paint, you have quite a few options.
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Improved indoor air quality:
Ambient pro or Auro’s Anti Allergy
Best all rounder for wall & ceilings:
Grafclean or Auro 524 are both excellent and easy to use.
Lime / Heritage
Ecosphere, Ambient Pro , GCS Interior, GCS Exterior or Clay Paint
Cheap basic economy / primer / mist, use Nevada
For colours, try these natural paint colours.
For matching wood and trim, check the natural wood paints