What's wrong with Orange!

Absolutely one of the best colour combinations in a garden is green .... and orange!
So why do so many gardeners shy away from orange-coloured plants in their gardens? Bright colours are brilliant, but there is a way to use bold colour combinations and a way to not do them.  It's very simple to understand and I guarantee a happy flower in bright orange, vivid red or acid yellow WILL put a smile on your face! 
Buttercups are in fashion folks! ;)