Problem on reproducing the effect of coloring on the web with this repo

[wishforgood]

I used cgi-bin/cgi_exe.py and feed my example image to it. While I expect a similar performance, I got totally unrecognizable results. Here is my example image, the corresponding result and the ref image respectively. I set the alpha channel of ref image to be all 1. Actually I don't quite understand how to generate a ref image, so I assume that it should be the same image because it has to be named with the exact same name with input image in the code.
So can you provide your ref image or simply describe how to produce one?

[sungjun3010]

I have the same problem, any comments would be helpful! 🙏