Quick chain painting technique - GIF

Quick chain painting technique.

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Previously:

Backwards-driving painting on rear of semi truck - photo
Baseball foul line painting tool - GIF
Book edge painting - GIF
Hand painting a table top - GIF
Hand-painting a stop sign on a lorry - GIF

Should have thinned the paint

I'm not sure I've ever wanted to paint a chain before. Is this a common thing that people do?

It could be rubberizing for a non-scratch/rattle application...