When I noticed recently that my most-worn white shirt had got a bit stained and yellow under the arms, I decided to experiment with dying it to give it a new lease of life. I chose a medium-pale shade of blue fabric dye (Dylon China Blue) as I wear a lot of blue and thought that would work really well in my wardrobe. I was a bit worried that the blue dye might just cause the yellow stains to turn green, but in the end I figured for the sake of the £3.50 or so that I'd paid for the dye, I wouldn't worry about it if it didn't work. This is the white shirt in question, which I've worn in a number of outfit posts (there's another example here).

Overall I'm definitely likely to try dying my own clothes again, even though I know that the dye might not always cover any staining. Honestly for around £3.50 it's not much to lose if it doesn't work, and if it does work then I'm prolonging the life of some of my clothing and creating less damage to the environment in the process.