Because the colors just won't work together.
The three yarns used here--
Jaeger Matchmaker merino 4 ply
Hand Jive Knits Nature's Palette fingering
--are all buttery soft and easy to work with, maybe that's why I didn't realize how sharp the contrast is until the pattern was nearly done!
Now the palm side looks funny to me ;-).
Well, a post shall never be depressing! Let me show you a couple of swatches I made sometime last week. I played with the original pattern a bit--it has become a habit now.
This is the original pattern (from one of the four treasuries), short and sweet.
Together with its mirror image, it becomes a larger pattern:
In the last two or three repeats, the left side of the pattern was shifted by a half vertical repeat, however the pattern repeat is too small to reflect the difference. I think I'll leave the last variation out.