I just got my new pc and Im testing it out.
I using Book of Silence and Bethesda Hi-Res DLC Optimized v2.0 in adding higher graphics.
When I got to the giant outside Whiterun, the bow on Alea's back is purple-ish white and another's shield was the same. So was her quiver.
I had the same bow as her and it looked fine.
I also noticed a lot of mountains had patches of very low graphic planes you could walk through.
What could cause these things?