Re: Does line color really matter?
In the most excellent book The Trout and the Fly, A New Approach by Brain Clarke and John Goddard, (1980) they cover this subject extensively
They tested three lines, a white, a brown and a green, above the water, on the water in the window, and on the water in the mirror (the reflective surface area outside the the trout's window of above surface vision)
To make a long story short, They found the the white was less visible above the water, while on the water in the window there was little difference.
In the mirror on the other hand there was a great deal of difference.
In every case, the white fly line was vastly more visible than either the green or brown lines. It lay like a great bright crack in the face of a mirror; and when cast into the mirror, it fell like a flash of white light across the whole field of view
The simpler the outfit, the more skill it takes to manage it, and the more pleasure one gets in his achievements.
--- Horace Kephart