http://projects.haskell.org/diagrams/gallery.html
Juicy pixels for raster manipulation:
https://github.com/Twinside/Juicy.Pixels
And gloss or haskell for mac as a processing kind of environment:
http://gloss.ouroborus.net/
http://haskellformac.com/ (http://learn.hfm.io/fractals.html)
There's an old comment thread from a year ago here:
https://www.reddit.com/r/haskell/comments/2naug0/haskell_as_...
I'd be interested to know what you think about the feasibility of using these tools to produce the kind of things you make :-)