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Talk:Derwent Cumberland Pencil Company

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It should be clearly noted that the term "lightfast" refers to dye colors lasting up to but not always beyond 100 years. Many dye colors are labeled with pigment names to confuse them with permanent colors that have no known lifespan when exposed to light. — Preceding unsigned comment added by 67.101.105.218 (talkcontribs) 18:30 UTC 16 December 2007 (UTC)