Recommendation for an audiophile speaker cord that is not "bright"?

@audiozenology makes a great point. 
There is complex interaction among amp/speakers/speaker cable.

I love Nordost interconnects (currently using Tyr 2), but have never had luck with their speaker cables.

I’ve been using Audience AU24se speaker cables for 10 years with no desire to change.

Stay away from silver plated copper cables. I've have good luck with just pure copper. Verastarr makes a very good pure copper flat cable. Love them. Really helped with the brightness I was getting before and still delivers all the detail your system can deliver. 

+1 for Lowe’s 14-2 zip cord

op-if you haven't dropped dead from reading all this yet, good work.
I too need a less forward top end for my ears. I met Ray Kimber at 
RMAF last Sept. He made me a pair of the 8's custom split.
5 strands go to the woofer and 3 to the mid/upper.
all copper. About $300 as I recall. Love them. I was shopping
the Cardas market before Kimber as they have a rep for being
softer up top. But those will cost you 2-3X what the Kimbers do.
No silver or Nodoze for you.

I have tried them all and found out 
that Black Cat #3232 the best.