Colour isn't scary, it's never bad to be noticed.

In the last award ceremony you watched, how many black dresses did you see?  How many were in the best or worst dress lists?  The answer is not many.  There are 2 main reasons for this, the dress has to be an absolute show stopper to draw attention, making it an enormous risk. Secondly photographers are not drawn to black as it sucks light and can photograph badly.  The aim of the game on a red carpet is to get noticed, to be seen not to fade.  So unless you are a super nova level star and it doesn't matter if you turn up in burlap, every stylist worth their Spanks and boob tape will push you towards colour.

SO, what's my point, considering I do wardrobes not red carpets?

Is this the wardrobe you get up to, every morning, is this what you have to choose from?  Variations on the theme of black, grey and the occasional exciting navy piece?  I'd go back to bed.
When I look at the individual pieces of this wardrobe, they are strong, but you'd never notice, they have nothing to make them sing, no highlights or spotlights, just nice safe choices to blend.  Nothing stands out, so it's easy to think it doesn't matter what I wear - one choice is as good as another.

What a totally passive way to live, every decision you make matters and should be conscious. We all have safe options, a killer dress or suit - that you can drag out, dust off and knock 'em dead in. But why be blah every other day?

 However if you inject colour into the same wardrobe, it becomes a lot more interesting, it's easier to see items and therefore put them together in interesting ways.  I'm no scientist but I've watched people long enough to know if you wear colour well, people think you're dynamic and exciting, it tends to make them feel as if you might have something to say, worth listening to - wear it badly they think you're Barbie. (Risk = Reward)
This season is about bright colours and bold statements.  So give it a try, next time you're in a shop and you have 4 black things in your hand, pick a puce, purple, teal, emerald or cobalt blue.  You've got your clothes off anyway, try something new.

Colour will get you noticed, but it's you that they'll remember!