The following ships have custom sail textures too:I've already removed the special sails from the standard CrimsonBlood
"PO_Caravel50" has "sail_petros_blue_white.tga"
"Schooner50" has "sail_petros_blue_white.tga"
"Barque3_50" has "sail_Petros_black_red.tga"
"PO_Fleut50" has "sail_petros_plain.tga"
"SP_Galeon50" has "sail_petros_plain.tga"
"GaleonWar" has "sail_petros_plain.tga"
"Galeon50" has "sail_petros_plain.tga"
"Xebec3" has "sail_barbarossa_plain.tga" (were made to match though)
"XebecAS" has "sail_petros_blue_white.tga"
"PiratCorvette50" has "sail_Petros_black_red.tga"
"CrimsonBlood" has "sail_Petros_black_red.tga"
Almost all of those are Petros' work, as you can see. He liked having his own ships with his own sails and I agree they look nice.
But do they stand out too much compared to the other ships? Many of them do see storyline use in especially the Bartolomeu and Assassin storylines.