Greetings Ron J.,
Every ceiling in my house is smooth. I have never really had to repair popcorn ceilings so I would not be the guy for you.
But, you said color is not a problem... so, have you tried painting the ceiling flat black and then adding glitter to it while it is still wet? Dim lighting or even better, black lights might help.
I'm pretty sure that would hide the patch!
Then again, I would listen to Shawna.
Good luck,Jason (-:
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