I have not noticed any difference and so probably wouldn't be able to tell any difference in a double blind experiment.
After a number of extractions with d-limonene I will not use it again.
I don't bother if my product is red, brown, white, crystalized or goish.
But with petro ether the extraction method I use (q21q21) is much less a hassle, everything clean and pure and fewer confounding factors that can destroy the extraction which has happened to me recently due to oxidized/old limonene.
Limonene, byebye, thanks for serving me :-)