3D design change

The initial 3D design is given in the attached files. We need a simple modification: 1. The .ply file shows the overall object volume. 2. If you open this file on a compatible CAD then you will see that the surface is colored. 3. The colors have a gradient but we want only absolute colors: Black Blue Green Yellow (we do NOT want any color in between) 4. The change you will make is simple: you are going to add 3D objects resembling the surface coloring into the Black object. 5. The object you will insert into the Black will be the Blue one, than inside the Blue one you will insert the Green one, than inside the Green one you will insert the Yellow one. 6. The colored objects that you will add does NOT have to me EXACTLY the same as the surface coloring, they will be simple APPROXIMATIONS of it. This makes the job very easy, it does not have to be exact, an approximate result ise good enough. 7. The end design aims to be 3D PRINTED ON A 4 HEAD FILAMENT BASED 3D PRINTER IN 4 DIFFERENT COLORED FILAMENTS. We have many such designs to be handled the same way, but we will go in steps: 1. Make the design change for one model (that is given in the files) 2. Check the model, to see if it is properly sectioned in 4 different colors 3. 3D print the model 4. Make necessary modifications 5. Continue with the next model (all model are of a similar shape) therefore please qoute for the modification for only the attached model (just ONE model) If we are satisfied with the result we will work together in future batches. Sincerely