I see that you have your answere, so I'm just going to say Good Luck with your first project. Be aware...FSL is addictive and you will be stitching out MANY FSL projects after this one. ENJOY!!!
\you got your answers but i will add thast you can use the white and black bobbin threads and the work is just as nice.
I HATE TYPEING WITH THIS KEYBOARD
You most certainly would. Even when it's white don't use bobbin thread but use the same thread top and bottom. Have fun making the bookmarks, it's so nice to do!
Yes, Use the same thread on bobbin as you use on top for your FSL. * B sure & post it for us to see.