Cut out, retouching, add shadow and colorization of bracelet images

I am looking for a designer who can edit some images of bracelets.
You will receive 30 images.

15 of the bracelet ribbons are in one colour and the other 15 are out of a two colour ribbon.
All photos taken are in the same ribbon colour so that the colorization process should be pretty easy.

Tasks:
1. Cut out the bracelets
2. Retouch the bracelets
3. Add natural shadow to the bracelets
4. Change the colour of each of the one colour bracelets ribbon to 15 different colours
5. Change the colour of each of the two colour bracelets ribbon to 2 colours (photo is in the colour “gold black” and should also be colourized to “silver black”)

Attached you can find low quality pictures of the colours of the ribbons.

As example you can look at:
https://ae01.alicdn.com/kf/HTB1NW1NQVXXXXczXXXXq6xXFXXXT/2017-neue-Mode-Schwarz-Anchor-Armb%C3%A4nder-M%C3%A4nner-Charme-550-%C3%9Cberleben-Seil-Kette-Paracord-Armband-M%C3%A4nnliche-Wrap.jpg_640x640.jpg

This is not an actual image of my products but you can use it to get an impression.

If you have any further questions let me know.

Thank you in advance!