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You’re just blurring them, really, so as long as you understand the difference between highlights and shadows, you should be able to “stay in your lane” and not smear or smudge in the wrong way. You are not really working up the tones in a drawing or applying complex artistic thought to the work. It takes a little bit of skill to lay down the brush strokes, but not much. It’s a creative task that’s perfect for non-artists who are also art lovers. Anyone can color, and most people can do it reasonably well. Most important, it doesn’t depend on your skill. Coloring is also a bulwark against the demands of an always-on, Internet-connected life, allowing you to reclaim your time doing something that at least feels more productive than liking and sharing.
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It’s part nostalgia for the time before judgement and rules around art, when you could lose yourself in crayons and achieve the kind of creative flow that makes people feel good inside. The adult coloring trend is easy to understand. Smudge is in some ways analogous to the trend around adult coloring books, which exploded in 2015 and continues to draw new adherents. Google Trend search data for “smudge painting” in past 13 years.
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