looking at old posts i see a number of members read the book and found it useful, ME TOO. he mentions a system called 'steelhead color selector' which seemed to be a set of filters to enable one to identify 'best' colors in the water and light on a particular day and place. in the book he thanks gijoes for marketing it but i cant find it on their website. did anyone ever try this system or know if it is still available anywhere?