Open your overrides.txt in data/init, search for "#BONE doors", and replace anything there with:
#BONE doors
[OVERRIDE:197:I:DOOR:DOOR::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:240:I:DOOR:DOOR::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:186:I:DOOR:DOOR::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:79:I:DOOR:DOOR::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:15:I:DOOR:DOOR::_MDF_overrides_7:143:7::BONE]
#BONE doors
[OVERRIDE:197:B:DOOR:Door::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:240:B:DOOR:Door::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:186:B:DOOR:Door::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:79:B:DOOR:Door::_MDF_overrides_7:143:7::BONE]
[OVERRIDE:15:B:DOOR:Door::_MDF_overrides_7:143:7::BONE]
Let me know if it works. I added the last three lines... (EDIT: Tested, works.)
Edit: Boltgun: I think it simply doesnt have the fitting override. The wiki has no entry for bone doors, and doors change their tile number depending on material... found 5 entries in total. ^^ The color in this case is hardcoded by me, it uses the furniture-top.png, which ignores any ingame color.
Edit: Vordak mentioned having a look at plants, and I agree. They were done very early, when I had even less of an idea what I'm doing than now.
I sat down with some old sprites by RallyHo/Rydel and ObsidianSoul, and made a new set based on those, altered quite a bit here and there. The plants are smaller, have a stronger contrast and should look much clearer on grassy background. I also made better farm plots.
Edit: Splint, I added the wavy water for brooks. They had no animation so far.