Are people not bored of all white yet?! I've had four white pairs in a row and have made a conscious decision to go for something different this season although admittedly they do still have a hefty helping of white...
For me, there are some gloves that go for really bold colours that can look really well. Take the 2014 Hunts County Revolution, the 2014 Slazenger Ultimate, or the Ton Max Power Pro gloves to name three. However, there are some gloves that go for really bold colours that end up looking rather tacky and sometimes horrible. The one that struck me in that way is this year's Adidas keeping gloves, and to be honest, not seen a set of Adidas keeping gloves that stylistically I have liked.
So I guess it comes down to design. Most people want a classy looking glove, and some will go for a swish type look that some of those white gloves with bold colours. But of the two, I think the all white gloves do look very classy, though they can be a pain to keep clean!