I love french cuff shirts, but unfortunately being a recent university grad without the career to match the degree yet, I don't get to wear them often, mainly events such as weddings.
Also I enjoy wearing shirts with a bit of colour to them and had some trouble finding french cuff shirts in colour. I found many places which sold them in white, some in black and thats about it. I found an excellent lavender coloured shirt with french cuff that I wore to my cousin's wedding, but could not find one in green for another wedding I attended this summer, and even had to specially order the lavender one.
Looks like that once I start to build my wardrobe I may have to consider custom shirt makers.
Tailored shirts You are right about the colours though, I've rarely found a shirt with colour that is not understated in a very British way. That doesn't make them ugly though.