Some times I do and sometimes I don't. I have some threads that my daughter gave me (she used to sell emb threads) so if I have a colour that matches the towel then I use that if not I use bobbin thread.

No. Who's going to look?

No.

Usually use white bobbin thread except when using black or red thread,for some unknown reason the white bobbin thread has a tendency to show through in places.

Sometimes I do because I want both sides to look good.

I match the bottom thread with the colour of the towel, as the embroidery is in reverse to the front. This helps hide the reverse stitching. Janette

I have always used bobbin thread. I will consider using same color as the towel...new idea for me, thanks...Suzanna

I use the same thread. Gives a nice finished look to the towel and it always looks pretty even if the backside peeks out. I know some people use bobbin thread the same color as the embrodery thread, but why bother? Just use embroidery thread for both. Besides, who has room for all the colors of bobbin thread?

Usually I just use te normal.white thread, but when adding a name i use same color on top and back
Rgds
Linda

I like to use the color of the towel on the bobbin

I always match top and bobbin on all my embroidery if you can see the back. I have a very good selection of bobbin thread I purchased just before I retired.

It depends on the design I use. I matched the towel color for applique and the design color for fill.