Jablonex Czech Seed Beads Mix, Size 11/0, Rainbow Opaque Multi, 1 Hank Per 4000 Beads

Are these considered to be size 11 beads? I need them for a trip to Kenya & know nothing about beading. Thanks for your help.

I need some beads with a bigger hole, what size do I order?

How big is the hole?

Will the color wash off if beads are made into rings? Do the colors go all the way through the bead?