The pink favorite shirt my daughter has a true odyssey behind him. First, I washed it with some blue that rubbed off terribly. Trying to save the whole wash load with intensive decolorizer the shirt in a dirty pink left behind. Something similar to RGB 209-108-108 and blotchy. I then tried using Simplicol real color refresh again, unfortunately without success. The color remained the same, but was now at least equally ;-)
So I tried it this morning with a pack of these textile paint again. Successful. Although it is not really pink-pink but is rather in the red (approx 243-0-73), but that's okay. The finished color is true pretty well with the pictured on the package.