I have had this thread for sometime – not sure why I originally purchased it but maybe just because it is so pretty! This is Colors by YLI, a variegated cotton thread that is quite thick. It is a 30 wt. 3 ply thread so used a size 16 topstitch needle and increased the stitch length to 2.5. The stitching on the left in the photo below has very bad tension. I decided to re-thread the top thread and re-thread the bobbin before fiddling with the tension which I had set at 3.75. That did the trick so am thinking that the top thread had not been in the tension discs when I first started stitching. The second photo shows the back of the sample with the very poor tension on the right side.I again used Bottom Line thread in the bobbin and the sample has Mountain Mist White Rose 100% cotton batting. As you can see this is a very small sample as I didn’t want to waste much of this thread since it was heavier there would not be as much wound on the spool in the first place. I also found that when quilting with this thread I had better results when quilting at a slower speed.
The variegated color ranges from very dark to very light so I will want to keep this in mind when I use it on a real quilt. It does make a bold statement though and the thread is pretty smooth and free of excess lint.