My Spider IV l Line 6 amp has a User Bank B setting called Acid Wash that is a classic Jerry tone. Uses blues amp model with pumped bass and mid, lowered treble. Can send setting to you, email me. It probably uses specific drive and channel volume settings that I need to eyeball. I add reverb to it, and slight echo for Mystery Train ala JGB/Merle country jams. I think the name is not for a psychedelic sound, but an oblique reference to the tie-dye GD set.
Has good bass and middle, and the higher end flares out to a nice horn-like honk with sustain. Add some auto-wah and wow, Fire On The Mountain, too! Tone.