Mono amps and different length speaker cables


Wondering if there is any noticeable negative effect from using say a 3 meter pair of speaker cables to one set of binding posts on the amp and speaker and using a 2 meter pair of the same brand and model of cable to different binding posts on the amp and speaker. I am using solid state mono amps.
ce511
Not sure if it's clear to everyone that he is apparently referring to biwiring, with one length going to one section of each speaker and the other length going to the other section of each speaker.
this was not at all clear to me, and if it had been (guess I should read more carefully) I would not think the question weird at all. I just couldn't imagine buying a single pair of cables different lengths . . . especially when you have mono block amps.
"I just couldn't imagine buying a single pair of cables of different lengths."

It wasn't clear to me either, that's why I wrote it seemed weird.
It's my understanding that if have two identical cables, one of which has a white jacket, the other a black one, the cable with the white jacket will sound noticeably superior. Anyone find this to be true?
I would add that in most systems there are far more important issues (isolation, room acoustics, mis-matched components et. al.) to consider than 1 meter of wire.
So much of this stupid hobby is psychological, I will always be aware SCs are different lengths and wondering if hearing differences instead of just enjoying the music. Therefore, always same length for me.