I have explained it. Twice already. It's a bug. It has nothing to do with your tileset. The color scheme you use doesn't make a difference. Vomit is hardcoded to be green. Sometimes it uses dark blue instead. That is all. There is no further explanation. It's not a mayday problem. It's not a color scheme problem (although changing color schemes is a thing that can provoke it). Understand, if it was an issue with your color scheme, then everything green would be blue instead.
You can't mod it, and it hasn't used that tile for like 8 years. Stop stressing out over virtual vomit.
/dfg/ - Dwarf Fortress General
Luke Perez
Henry Cox
Christopher Bennett
I like to use Myne, which CLA was based on, pic related. I'll post the tileset in a bit.
Lincoln Cox
And here you go!
Jonathan Gray
I'm about to start a new fortress in a hopefully comfy location. First seven replies to this post decide the skills of my dwarves, one dwarf per reply.
Parker Moore
Cheesemaker
Sorry.
Try to make it a challenge and base your exports and general industry on dairy products.
Mason Gomez
Butchering x1
Tanning x1
Cooking x5
Jose Thompson
Tactician as high as you can afford
William Reyes
Adequate Miner
Adequate Mason
Adequate Engraver
Adequate Building Designer
Adequate Stonecrafter
Isaiah Walker
You better name one of them Stephen Hawking.