What you are getting are the instructions for colour separation printing machines - as used by larger scale commercial printers.
These printers operate by inking the sheet in three (or four) separate processes each process using a different colour - CYM(K). Traditionally, these separations were for preparing silk screens and there was no requirement for colour information within the file.
So, if you are trying to print these separations on a normal SOHO printer, there is no instruction in the files for them to be printed in any other colour than black. On a computer controlled colour spearation printer, the instruction for the separation print normally readable only with specific software.
Do you have a good reason to print in colour separation? If not, I would leave well alone because without appropriate equipment i.e. at least a colour separation printer, you could end up in a real mess and very confused.