Yellow Shoes?

I'm hankering after a pair of yellow shoes. I've seen these in Office that I quite like.
But do I really need a pair of yellow shoes? Not 'need' as really we only need two pairs of shoes (its very bad to wear the same pair all of time), but would I wear them enough to justify it?

I'm going to continue to ponder this as it is much less stressful than other things I could be thinking about instead.