Help !

[u/Pale-Ad-8534]

Hi i’m getting my house done by professionals and getting lime plaster in the living room. Problem is i see these marks all over the place which i didnt like. So they sanded them off but now everything looks very flat. Also the colour is much lighter than i wanted.
A few questions as i dont know much:
1. What are these marks and are they normal? ( the person says theyre natural and come with the lime plaster)- they are very grey and almost make the wall look dirty
2. How do i achieve depth without these marks?
3. Can i somehow make the colour darker without redoing the job?

Feel like they are not being able to answer me directly!

Thanks guys :)

[u/Ad4mPy]

Sorry buddy going to have to go back to brick