Tough question. Probably clear. What about using the locks from Chamilia. They are silver so they would look like beads. Very pretty. I'm planning on getting the locks for my leather bracelet, the gray one. I have 5 beads on it right now and then I'll add the locks as soon as I can squirrel the money together.
I agree.. try out the locks! Maybe you can find brown stoppers or request brown from the seller? Maybe they will know where to get them