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<p>[QUOTE=&quot;-jeffB, post: 3056681, member: 27832&quot;]&quot;Transparent&quot; isn&#039;t that simple. We&#039;ve all seen the colorful sheen of oil or gasoline on a water surface, and both liquids are (approximately) transparent.</p><p><br /></p><p>For that matter, it&#039;s a cloudy day outside; since water is transparent, how can I see the clouds? <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Patterns and textures at a fine scale <i>absolutely</i> can cause a surface to change color when it&#039;s wet vs. when it&#039;s dry. I&#039;ve seen numerous seashells that show vibrant color when they&#039;re wet (with water), but are very dull when they&#039;re dry. Toned cents? I have no data. I&#039;m feeling some temptation to experiment, though...[/QUOTE]</p><p><br /></p>

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