One of my favorite maps to use in oa0.6 was mc-oa-dm03 from the map-canter map pack. I was very excited to see it's inclusion into OA0.7 with several improvements as oa-shouse. I loved all of the graphical changes except for the new lava. To me it was bright, repetitive, and pretty much just sat there with barely any movement.
Originally I was gonna just post and see if anyone could change it to look a little better, then I decided to look into it on my own a bit. I only ended up adding about 4 lines to the liquids-lava shader file. I really like how it came out, and was just wanting to see if anyone else was interested:
before:
after:
click thumbnails to view larger image
I've attached the .pk3 file for the modification. just unzip it into your baseoa folder.