Taperava,
I can't add anything to the wonderful cutting directions that Boo gave you, but I can tell you that variegated thread is one that is NOT just one color, but changes color along its length. They can be any colors, from shades of blue to rainbow colors. Here is a link to showing some variegated threads: http://www.threadart.com/shop/category.asp?catid=41
Happy Quilting!