All the lines you mention are too large for good tarp/tent guy lines. the lightest line for the task is good enough. I agree with Roger. Heavyier lines, 100+pound test lines, are a bit of overkill and can actually rip a tarp if solidly mountedp, say to a tree or large rock. I would rather the line broke (an inconvenience) rather than damage the tarp.
Generally, a short length of braided fishing line is all I need. 6" for the ridge line and a few 2' sections. This has *some* stretch, so it helps when pulling a tarp fairly tight.
Sometimes I need to do a surgeons knot and use a loop-to-loop connection of a line is too short. Two or three sections can be used to join into a 10' line for those areas without trees.
Fairly stiff in higher tests (say 50pound test) it stays relativly knot free. Often just wrapping it in your hand will avoid most wind knots. As far as visibility goes, I have learned over a few years about where the lines are. I don't really need bright lines. If they weigh .25oz for the whole tarp, I would be surprised. I usually carry an extra hank in my ditty bag, maybe 50' or so. This is may weigh as much as a half ounce, but I never really weighed it...it varies by trip. And it is pretty cheap. Knotting can be difficult, but I simply use a couple loops. I do not adjust lines except by pulling a stake and replanting it. It is quicker than fiddling with knots.
I use heavier line for bear bags. But this is more to protect against sawing into a branch than anything.
Spectra is good line, perhaps too good. I feel a lighter line won't damage the tarp or tent, though. Heavy fishing line works well for my needs.