The first looks like they're very well matched. But the color wouldn't look as good on me.
The two center ones look like they've got a bit more orient, but they don't look as well matched. Personally, in a lavender strand I like a slight variety of tone. It adds to the unique look of the necklace. I like the color of the fourth strand, but I'd probably choose one of the center strands, if it were me. What's your skin tone like?