Example of color separation 5 - silkscreen software for colour seperation
JUST USE 'PASTE FROM' in MS PAINT AND ADD DIFFERENT CHANNELS TO PREVIEW
ORIGINAL- true color Result - 4 colors + black + white (Total 6 colors) ( JPEG)

Channels in BMP: Don't add White - is INVERSED for prints Films Where bkg color is different /not White/!
Black Channel Red Channel Cyan Channel Blue Channel Yellow Channel
White Channel (As Black - inversed) RESULT AS BMP