Cold and hot water line contacts and condensation

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I'm in the process of upgrading my existing washer box to a model with an automatic shutoff feature. In the meantime, I want to correct a plumbing error from the original construction where the cold water supply was mistakenly connected to the hot water valve using a red pipe, and vice versa, but I'm concerned that doing so will lead to an inevitable contact between the cold and hot water lines, which causes condensation according to a Youtube video.

I believe there's enough space to insulate one of the pipes using black foam insulation, but I'm open to exploring alternative solutions that could prevent the lines from touching while correcting the mistake. If there aren't any better options, would insulating just the cold water pipe be advisable?

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