How do I add a color column to the following dataframe so that color='green' if Set  ==  'Z', and color='red' otherwise?

    Type       Set
1    A          Z
2    B          Z           
3    B          X
4    C          Y

How do I add a color column to the following dataframe so that color='green' if Set == 'Z', and color='red' otherwise?

   Type  Set
1     A    Z
2     B    Z           
3     B    X
4     C    Y

How do I add a color column to the following dataframe so that color='green' if Set == 'Z', and color='red' otherwise?

    Type       Set
1    A          Z
2    B          Z           
3    B          X
4    C          Y

df = {'Type': ['A', 'B', 'B', 'C'], 'Set': ['Z', 'Z', 'X', 'Y']}

How do I add a color column to the following dataframe so that color='green' if Set == 'Z', and color='red' otherwise?

    Type       Set
1    A          Z
2    B          Z           
3    B          X
4    C          Y