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When I use beads for the flatty's it'll depend entirely on the water conditions, if it's clear I like to use black and green but if it's coloured then I'll use the illuminous ones or red and yellow.
I used to use 15+ beads on a rig but now I only use 5 or 6 which seems to work just as well.
As for a shiny lead I really couldn't say as I've never tried it
Thanks for a great question