You won't have to cut the color that has 6 rows, you can carry it up the 2 rows of the other color. When you change colors, loosely wrap one around the other at the edge and begin knitting with the new color. It might be possible to carry the one color up 6 rows as long as you keep it loose, but not too droopy. That way you won't have to cut them.
sue- knitting heretic