Where will I find ebooks with colored letters to help me practice synesthesia?

i wanna learn how this works. trying to find some ebooks with colored letters and also, i don’t have any available ebooks with me to be converted to one.

it would be a great assistance if you could help me. thanks

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.