Thanks for the reminder, Lee. But there are problems all over with that design.
First of all, the diagonal stripes cannot cover the shirt completely, as most printers normally have a standard oversized A3 -rack (400 x 300 mm) to print on. It is possible to print completely, but that would raise the printing price substantially.
Seconly there is the colour of the stripes. Originally the blue should be left and red should be right, so the stripes eventually become more like a French flag instead of a Dutch flag. I do not believe the majority of the CA-people would like their own shirt to become Dutch as most are all English.
A shirt with the coloured striping the original way would look like this:

Working in that same way, but then with a Union Jack, maybe it could look like this:
