Iv found that when using them in very deep water - 70 plus metres- for large maasbanker etc, glow is VERY important. Thats why id rather use the cheaper ones than the expensive ones, as they have glow beads and the adhesive used also glows, on every hook. When using the mustad rigs i basically catch all the fish on the same 2 hooks with the glowing attachments, where the others only have flash. So i will choose a glowing rig over a flashy rig any day, but thats purely because its dark where i put it. In terms of colour, id say pink because it represents a little shrimp which is what plankton feeding baitfish generally eat. Hope this helps!