Answered
How filling all area between line x=0 and parametric curve a?
The same question 
How filling all area between line x=0 and parametric curve a?
what zone?
the old versions colored all points inside a polygon. Now only inside an odd number of times are colored
see differences
you can do a polygon for zone 5 and colour it handly like in attached
I think this is an error of desing because then the inverse filling is wrong
A workaround (approximation)
Comments have been locked on this page!