A slightly different market today:
The Sleep of Reason is a black-and-white horror comics anthology set to debut in the summer of 2013. It will be accepting proposals for submissions from Halloween of 2012 until November 30th, 2012. Accepted submissions will be announced December 30th, 2012.
They pay around $50/page, but check out examples and the proposal document on their site first. Proposals are due by the end of the month, but obviously you have longer to work on the project.
Note: I've done writing for comics before (collaborating with an artist) and it was a lot of fun.
Full details here: http://www.ironcircus.com/sleep_of_reason/