Many thanks guys, this is my first zeiss lens,thus why I'm not sure if this is a normal behavior of this particular lens or not.

Greetings,
Sadly it is normal behaviour of makro-planar 2/50 Zx. It may be controversial aspect about the range of this chromatic aberrations. Looks here: http://www.photozone.de/canon_eos_ff/535-zeiss50f2eosff?start=1 (last photo and description at 'Bokeh Fringing / Longitudinal Chromatic Aberrations (LoCA)' paragraph). It is described as not much disturbing. Makro-Planar 2/50 is great double Gauss lens with outstanding close range correction of spherical abberation but it is not apochromatic lens in term of Zeiss's apo-chromatic definition. It has also wide difference between MTF performance at center and corner of image plane with wide-open aperture. Best regards, WZ.

This seems normal and actually better than most non corrected lenses. Chance are you won't be photographing rulers on a regular basis :) As far as Zeiss addressing this, they can't. It's just the characteristics of such a lens design. 9999999.999% of the time you wont even notice it on a regular photograph. There is always the Otus which takes care of CA but at a price.

Have a look at these. It will make you feel better :)
http://zeissimages.com/standardgallery.php?lenstype=441&showall

just got the zeiss 50f2 ZE for canon 5D3, found this green AND red bokeh fringe when doing some test( SHOT AT ISO100 1/320 F2 the ruler is placed at about 10-15cm from lens) , is this normal or if thats too much I have to send to Zeiss Germany to get it repaird