grey to omni (#61292)
grey to omni (#61292)

Swaps the default color of fluid ducts from "grey" to "omni."

Fluid ducts also read from the global list of pipe_paint_colors but were not updated when grey was changed to omni in #61162 (fef3629d117fb353c41343dadb37986fadb67b79)
Jordie0608/tgstation,Jordie0608/tgstation,WJohn/-tg-station,Jordie0608/tgstation,MicroWorldwide/SS13-TG-station,Cruix/-tg-station,ShizCalev/tgstation,Cruix/-tg-station,MicroWorldwide/SS13-TG-station,ShizCalev/tgstation,Bawhoppen/-tg-station,Razharas/-tg-station,Cruix/-tg-station,tgstation/tgstation,CPTANT/-tg-station,Cruix/-tg-station,CPTANT/-tg-station,tgstation/-tg-station,Cruix/-tg-station,ShizCalev/tgstation,ShizCalev/tgstation,Bawhoppen/-tg-station,tgstation/-tg-station,CPTANT/-tg-station,tgstation/tgstation,WJohn/-tg-station,tgstation/tgstation,WJohn/-tg-station,Cruix/-tg-station,CPTANT/-tg-station,tgstation/-tg-station,Bawhoppen/-tg-station,Jordie0608/tgstation,tgstation/tgstation,CPTANT/-tg-station,MicroWorldwide/SS13-TG-station,WJohn/-tg-station,Razharas/-tg-station,Bawhoppen/-tg-station,Razharas/-tg-station,Bawhoppen/-tg-station,WJohn/-tg-station,tgstation/tgstation,Jordie0608/tgstation,MicroWorldwide/SS13-TG-station,CPTANT/-tg-station,tgstation/tgstation,Razharas/-tg-station,ShizCalev/tgstation,Razharas/-tg-station,tgstation/tgstation,Razharas/-tg-station,Cruix/-tg-station,WJohn/-tg-station,Jordie0608/tgstation,Razharas/-tg-station,ShizCalev/tgstation,Jordie0608/tgstation,Cruix/-tg-station,Bawhoppen/-tg-station,ShizCalev/tgstation,MicroWorldwide/SS13-TG-station,tgstation/tgstation,Bawhoppen/-tg-station,MicroWorldwide/SS13-TG-station,ShizCalev/tgstation,MicroWorldwide/SS13-TG-station,CPTANT/-tg-station,CPTANT/-tg-station,Razharas/-tg-station,tgstation/-tg-station,Jordie0608/tgstation,Bawhoppen/-tg-station,WJohn/-tg-station,MicroWorldwide/SS13-TG-station