Custom white balance

Had an interesting experience today with custom white balance. Was asked to
shoot a granite top and produce a print for matching purposes. My first
shot was with AWB and laying the print on the granite top showed that much
improvement was needed. After fiddling with Photoshop for a bit, it dawned
on me to use CWB. Wow, what a difference. The print blends so well that it
almost "disappears" on the top!

Natural indoor light (brightest time of the day), 20D, Epson printer, Epson
ink, Epson glossy photo paper. Worked so well that I thought I'd share it
with you.