I don't really get the Chilli Peppers.
But I've been taking notice of John Frusciante a lot lately.
Not just his tone, (which seems pretty Hendrixy -at least on solos), but his whole approach. His rhythm playing can really be madness.
With a guy like this, you can't just zero in on his "tone." He has an all encompassing way with the guitar. Tone is just one elemet.