Andrew,

Personally, I think the combination of blue and charcoal works very well indeed, and I congratulate you on a presenting us with this superb example. Too much blue? Certainly not.

Your choice of charcoal hose is spot on too. I have always advocated matching the colour of hose with that of the 'top' when possible - and that does not necessarily mean the shirt. Blue hose would work here, but would not be nearly as effective ......... and a lot would depend upon the actual shade of blue!