I am loving the casual look right now. It probably has something to do with how I have yet to get used to where all my clothes/accessories/jewellery/etc have been stashed in my new place, so getting dressed for anything other than work tends to be a slap-dash affair of whatever comes to hand fast enough.
On good days, this is how the 'grab whatever' style works out:
On the not-so-good days? One could risk looking a touch demented with patterns, clashing colours and wildly inappropriate shoes. Of course, in some circles that could be classed eccentric.