Lightfast

A pigments resistance to fading on long exposure to sunlight. Watercolours are rated lightfast on a scale of I-IV. I and II ratings are the most permanent.
Found on http://www.encyclo.co.uk/local/21274

Lightfast

A pigments resistance to fading on long exposure to sunlight. Watercolors are rated lightfast on a s
Found on http://www.encyclo.co.uk/local/22428

Lightfast

A pigments resistance to fading on long exposure to sunlight. Watercolors are rated lightfast on a scale of I-IV. I and II ratings are the most permanent
Found on http://www.watercolorpainting.com/glossary.htm

Lightfast

Coloured material that resists fading even when exposed to natural or artificial light.
Found on http://www.encyclo.co.uk/local/20484

lightfast

Resistant to fading or other changes due to light.
Found on http://www.rexart.com/glossary.html

Lightfast

Resistant to the destructive action of light.
Found on https://www.xrite.com/learning/other-resources/glossary
No exact match found