Remember, most of those colorants were intended for furniture that is usally shielded from sunlight.
I recall some types of colorant cannot stand up to sunlight and will change of fade over time. Do some checking brfore you make a choice.

: I've been looking at the images on the Redfish gallery and am
: really taken with this boat:
: http://www.redfishkayak.com/Geert_Fausagers_King.jpg

: Does anyone have any idea what the woods are? Especially the dark
: wood around the sides of the hull. I've found the builder on
: Facebook but he hasn't responded to my query yet. Probably on an
: extended paddling trip.

: Most of the really dark woods are really heavy. I was thinking
: about going with the darkest WRC I could find and using aniline
: dyes to darken it just prior to glassing.

: Thoughts about dark woods? Aniline dyes? Will the epoxy make the
: dye bleed? Will Lassie rescue Timmy?

: Jeff