Anyone seen any boys rash guard in NEON colors? Bright flourescent yellow, orange, etc? Big boys sizes?

I've been buying these for YEARS cause it's the easiest way for me to find my kids in a lake, pool, ocean.... and I can't find any so far this year! When your alone trying to keep an eye on multiple kids - this can be SO helpful!

HELP - anyone seen any BRIGHT shirts???? online or in stores? Sizes 12-16?