Yellow!
Yellow is all over the high street today. You can see it in the shop windows of French Connection and the moment that you walk into  Zara it's a sea of yellow. I'm going to wear yellow - it's been so grey I feel need an injection of vitamin C and somehow a yellow dress might just be the thing that I need. I love black but recently I've been wearing a wonderful pink coat from MING and now I feel so desperate for colour.
Lots of yellow in COS and shift dresses are easy to wear in any colour.
Sweaters in H&M
Hints of yellow in French Connection just in case you're afraid of too much colour!
Yellow coats in Zara.
Rails of yellow in COS, Â including a simple striped 3/4 length top - it's an easy way to inject a bit of colour in your wardrobe without too much commitment.
There are softer yellows in Banana Republic, an almost lime colour, perfect if  you're too afraid of yellow and looking loud in an office environment.