Weaving stripes/mixed fibers
well, as usual, I jumped into a project and *then* started researching it!
I have an old (pre-pawl) Beka rhl on which I want to weave an alpaca scarf. I bought yarn, but lost the labels and receipts so I'm not entirely sure what I have. I plan primarily a natural color warp & weft, and have alpaca for that, but they didn't have soft alpaca in the colors I wanted so I went soft exotic--for the one black weft stripe about 6" from one end I got a cashmere/possum blend and for the one purple length-wise (warp) stripe I got a blend that I've forgotten what it was except that it has some yak in it. I am almost finished threading the heddle ( I had to start over when I realized the heddle was upside down!) and now I'm wondering two things.
One: Will the finished project be a mess using different fibers? I can't rewarp at this point, but I could trade in the cashmere/possum, ordering black alpaca online I guess, though it's hard to trust something I can't touch and see.
Two: I've only woven (plain? Balanced?) where the warp and weft colors show equally. Is there something I can do on a rhl that will make the black weft and purple warp stripes stand out, minimizing the paler predominant warp and weft?
Many thanks for any help. I'm new here, and I didn't see any FAQs, so please let me know if in my ignorance I violate any group norms or etiquette.