Do you mean analog delays really color the tone so much? The Donner Yellow Fall just sounds like a Modulation delay to my ears and I don't like it. I like the fact that the repeats are warmer and not as pronounced as digital ones on analog delays but I don't want to lose the distortion character when I have either the Mosfet or Shredhead engaged
well, compared to digital delays, yes. they do color the tone. why not try a Digital Delay with a Tone knob for repeats so you can control the "color" or warmth of the repeats.
on another note, the donner is an entry level pedal hence the components might have to do with that tone loss/coloration. I would suggest trying out the mooer ana echo or repeater, but I have a feeling that the yellow fall might just be a rebadge of the two mooer pedals. so, the best advise I can give is to visit Lazer and audition the mooer pedals there so you can try before you buy.