We had great Moonball t-shirts that were navy blue, and the lettering was glow-in-the dark. Unfortunately I got bleach all over mine.
I don't remember exactly what they said, but the glow-in-the-dark really worked well!
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“All his life he tried to be a good person. Many times, however, he failed.
For after all, he was only human. He wasn't a dog.”
― Charles M. Schultz
Warning: The above post may be dripping in sarcasm and full of smartassedness.