Celtic Tat World! with this you can make your worlds look like celtic metal OR even add some pretty nice celtic tribal tattoos onto your stuff!,
for illustrious,
make sure to prompt for a background if you want, otherwise it will make a messy circular one,
for 1.5
works best from 0.6 to 1.0
this was NOT trained on colors but you might be able to get them at a push,
try combining with Navimixu's and MNeMiC's world morphs or Konicony's ai's, or if your feeling more WILD try out Donmischo's Billions of wildcards!
I use navimixu's method of pictures, 512x512 with hires of 1.5, img2img with a resolution of 1024x1024
remember feel free to post images it really does help out and lets me know you want more!
and if you like what i do feel free to send a Tip!