You don't have to be an indie business or a big market magnate to produce your own unique HG nail polish shade, Luv!
I do it all the time: if bored, tired, lonely or inspired I start mixing drops of different polishes on a piece of paper. I restore the formula of loved ones by adding nail polish thinner ( Sally's beauty has one), I improve opacity by adding white, black or color (cream finish) varnishes. I add glitter, duochrome and shimmer ones to boring or "tired of" shades, and it is SO much fun!