If you ask a question like this of 10 people, you are likely to get 10 answers. The only one that counts is yours. If someone wants you to paint one hugger orange, and you want to paint it purple, then tell me to take a hike and get my own. There will always be those that expect you to worship your boxes and not molest them. If the boxes are nothing but collectible trinkets not to be messed with, then hey you might as well collect stamps and coins. It's your boombox, your hobby, your joy. So if changing the color gives you pleasure, just do it. And if it bothers me, I can get my own and put it behind glass so I can stare at MY original.
Me, I painted this thing and afterwards, couldn't walk by it without looking at it (admiring it). I still can't. It gave me great joy to see the results and I would do it again in a heartbeat. This is the M70c version and in the condition that this thing was before the work, it would've been worth a pretty penny. But that had no bearing and I was determined to do the project. I never regretted it for a second.
[
Image ]