I found markschum's script that sets all to mid-grey, on sharecg. Not the Mec4d download, but it's the same script, same author.

I changed the settings and filename from grey to white. Here it is.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)