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2. Glass coloring and color marking - Wikipedia

   en.wikipedia.org/wiki/Glass_coloring_and_color...

   Manganese can be added in small amounts to remove the green tint given by iron, or in higher concentrations to give glass an amethyst color. Manganese is one of the oldest glass additives, and purple manganese glass was used since early Egyptian history. Manganese dioxide, which is black, is used to remove the green color from the glass; in a ...

3. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Tinted lenses (e.g. Pilestone [6] /Colorlite [7] /ColorMax [8] glasses) apply a tint (e.g. magenta) to incoming light that can distort colors in a way that makes some color tasks easier to complete. These glasses can circumvent many colorblind tests, though wearing them during testing is typically not allowed. [9]

4. Tint, shade and tone - Wikipedia

   en.wikipedia.org/wiki/Tint,_shade_and_tone

   In color theory, a tint is a mixture of a color with white, which increases lightness, while a shade is a mixture with black, which increases darkness. Both processes affect the resulting color mixture's relative saturation. A tone is produced either by mixing a color with gray, or by both tinting and shading. [1]

5. Everything You Need to Know About Eyebrow Tinting at Home - AOL

   www.aol.com/everything-know-eyebrow-tinting-home...

   For fuller, more defined eyebrows with little upkeep, few treatments can compare to that of a brow tint. Ahead, brow experts share their top tips for tinting your brows at home.

6. Color blindness - Wikipedia

   en.wikipedia.org/wiki/Color_blindness

   Tinted glasses (e.g. Pilestone/Colorlite glasses) apply a tint (e.g. magenta) to incoming light that can distort colors in a way that makes some color tasks easier to complete. These glasses can circumvent many color vision tests, though this is typically not allowed. [62] Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band ...

7. How to Make Tinted Moisturizer at Home - AOL

   www.aol.com/lifestyle/watch-how-to-make-tinted...

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