A few questions for those who have successfully dyed their clothes

1. My favourite outdoorsy pants have bleach on them. See pic. (I was a little over enthusiastic with the sanitizing when the pandemic started ) Can I dye them at home to save them? If so, navy or olive? (Black and grey are not options). They are sentimental and I won't let them go.

2. Can you dye something black and grey to navy blue? See pic of bomber with black overlay lace over grey knitted jersey. It's very old, and also very sentimental. I'm not letting it go, but would like to wear it again....if it were blue.

Also, which brand of dye is best? Does it make a mess? If it does - I will have to abandon the efforts. We live in a small loft with no outside garden!

Thank you. xo