<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def color(self):
 """Function color in IDA View"""

        color = idc.GetColor(self.ea, idc.CIC_FUNC)
        if color == 0xFFFFFFFF:
            return None

        return color