are there #markdown editors on #linux with a dark editing background that can output #pdf directly that doesn't look like hot garbage?

i am writing a lot of cover letters in #abiword and the traditional word processor flow plus the eye-searing white background is annoying. i'd also like to avoid banging out the cover letter in markdown in my text editor and then using #pandoc to convert it.

i'd like to be able to edit my doc and mash an export or save button for a PDF.