If you send me links to a few books from Project Gutenberg, I could convert the books for you. Send me the links to the books you want by private message along with your email address and I’ll email the books to you.
The books have to be in plain text format, which is why I mention Gutenberg, but any text file will work. The output files will be HTML and PDF.
Edit: people can now do it themselves with the synesthesia ebook colorizer tool. See this post for details: Colorize ebooks and other text for synesthesia training
