Mr. T.  Im probably missing something here but perhaps you LIKE the sound of colouration coming from cabs?  Its not abnormal in the slightest.  Loads of people love it, having a clean signal outside of the studio is over-rated imho.  You like your HIFI system?  Guess what it has colouration.  A lot of these new fangled lightweight cabs are designed to be extremely accurate.  Which is all well and good if thats what you want.  I believe this Alex's route and from what people are saying im sure he does it well. 
 
However on the other end of the spectrum we have the instant classics.  Ampeg/Trace etc.  These cabs by definition are knowhere near accurate but they sound good to some people, actually quite alot.  Could be alex's cabs arent for you.  Just a different view on the same situation I guess. 
 
On a side-note.  Alex without being rude you sound far too defensive of your product, from what I gather you have a right to be VERY proud of your product and for that well done  however I doubt its a one stop solution for everyone.  As I say well done and Im in no way slating your product