this is connect 4 project (python) including coding part and writing part ,modify(add)the code I gave to you

Coding part:(do not start from scratch ,continue work on the code I gave)

1.Different color chips(player can choose what color they want before the game)

2.Make sure players can’t use the same color

Writing part:

1.Explain the purpose of different color chips and what is being done and why it is your more interesting contribution.

what is issue while you doing the code for the different color chip?

2. explain the code you did

3.describe why  different color chips  have spent most time ?

4..Detailled Design API. Describe details about all methods and class of the architecture. This information should be in structured comments (e.g. Javadoc,pydoc) in the source files. A documentation generation tool (e.g. Javadoc) must be used to generate the document. For each class define the data fields and methods. Include:

The purpose of the class.

The purpose of each class data field.

The purpose of each methodReturn value and output variables

5.Provide a class diagram and at least a one sequence diagram. 

In a paragraph of text explain what the class diagram is representing and where in this class diagram your code contribution is involved.

In a second paragraph of test explain what the sequence diagram is representing and how your code contribution is involved in this diagram.