I have watercolors stored at home. Turner Acryl Gouache 18 colors Holbein Artists' Watercolors 18 colors These are the two sets. I rarely used them after purchase and stored them in a dark place. The paints seem to still be usable, but I bought them about 8 years ago, so the colors might have changed. Please refrain from purchasing if you are concerned, as they have been stored by a private individual. Instant purchase available. Turner Acryl Gouache Holbein Artists' Watercolors Transparent watercolor paints