I quite often get rather depressed this time of year and like bright colours that cheer me up but I tink Cybele is right, that grey can be cheerful too.
Let's review the evidence of my own grey obsession:
I've still got this gorgeous natural grey merino on my wheel. I've nearly finished this gorgeous fibre now. I may try to finish it tonight.
I've decided to ply it with some of this gorgeous natural grey alpaca, which i'm really looking forward to spinning and which will be next on the wheel.
I have also been experimenting with a slightly darker grey, and this 'Steel' colourway is in the shop now.