Paps doesnt report error when font specified is not supported

I'm using paps package to convert a lot of text files to pdf with different fonts for each(Automated using python). The problem with paps is that it doesn't yield an error when the specified font isn't supported.
eg: paps --font "Downlr" --paper a4 a.txt | ps2pdf - test.pdf
 ^ Downlr is my made-up name for the font, but the above code doesn't throw an error and instead creates the pdf in monospace(default font).

What are the supported fonts of paps and can i specify path to a font and let paps use that for conversion?

Thanks