Parallel coordinates plot multiple fixed colors

Hi there. Parallel coordinates plot documentation defines the โ€˜colorโ€™ attribute as a string or array of values to be mapped to the colorscale.
A single color for multiple lines is impractical to read. I wanted to have one fixed color (ideally the โ€œCNโ€ colors of matplolib) for each of my four lines.
This thread did not really helped me.
My question: is there a workaround to simply define one fixed color per line?
Could it be added to a list of requested features?