Python win32com excel remove interior color

Solution 1:

Use -4142, which is the corresponding value for xlNone:

xlNone = -4142
ws.Cells(r,c).Interior.Color = xlNone

Or instead of hard-coding, use EnsureDispatch() and then client.constants.xlNone:

from win32com import client
xl=client.gencache.EnsureDispatch('Excel.Application')

ws.Cells(r,c).Interior.Color = client.constants.xlNone