Hmmm...
I'm curious as to why your sailmaker didn't offer to include the sail numbers. They would be aware of all the current RRS requirements regarding size, (contrasting) color, and placement.
Also, if you're planning on racing around here, I'm also curious as to whether you've checked with PIYA regarding your planned sail number.
But, you know what they say about curiosity...😁 Good luck sailing!
Geo. W. Lefler
(fmr Commodore, handicapper, and PHRF prez... now retired, but not dead despite curiosity)