Well, I have. And although I can usually see the difference when I compare the before and after photos, I don't always find it very easy to apply to myself.
I've tried draping fabrics over my chest to see whether it's "my colour" or not, and a lot of the time I can't tell.
Not so with this cream coloured cowl/scarf I blogged about recently -
But when I put it on one chilly morning before work, I realised that I had fallen for that old "it looked so great on the model" trick.
Not only is my neck far too short for such a wide cowl, but the colour somehow makes my face look...unwashed. One's hand knits should not make one look fat and dirty.
Then I took it off and replaced it with my multi-coloured shawl...