They can be tied with lead eyes, but most top guides and I prefer Reel Eyes from 7/32 to 1/4 inch, yellow/black or red/black I favor yellow/ black for more contrast
Arctic char are present in rivers of Barents Sea basin from Volonga to Kara, Jan Mayen, Spitsbergen, Kolguev, Bear and New Zemblia islands, northern Siberia, Alaska, Canada and Greenland
(reds/oranges look more grey the deeper the light penetrates) -natural colors for clear water -bright/light colors for cloudy days or murky water I also like to have some contrast on each lure as well, such as dark top/light bottom, dark stripes or spots on a light background (or vice versa)
Over the years the tie has transformed into many other functional forms, including multi-wing hi-ties and wide profile synthetic hair flies, an example of which is Puglisis Black and Purple Tarpon Fly
American Fish Decoys by Steven Michaan "Dynamite Light The LED Lure"
But you know, that would probably smell bad, quickly