Django apply widget to all fields

Question

Is there a way to apply the css class to ALL fields instead of doing the following for each individual field.
forms.py

class UserColorsForm(forms.ModelForm):

    class Meta:
        model = UserColors
        exclude = ('userid',)
        widgets = {
            'text_color': forms.TextInput(attrs={'class': 'color'}),
            'background_color': forms.TextInput(attrs={'class': 'color'}),
            ... 10 more
        }

Answer 1

This should work

def __init__(self, *args, **kwargs):
    super(UserColorsForm, self).__init__(*args, **kwargs)
    for field in self.fields: 
        field.wiget.attrs['class'] = 'color'

Answer 2

Try iterating the form fields:

css1 = {'class': 'color', }
css2 = {'class': 'nocolor', }
class UserColorsForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(UserColorsForm, self).__init__(*args, **kwargs)
        for key, value in self.fields.iteritems():
            if key in ['field1', 'field2', ...]: # You can define a 
                # subset of fields in a list to selectively apply css classes, 
                # OR just iterate and apply to everything 
                # (take out the if-else statement)
                self.fields[key].widget.attrs.update(css1)
            else:
                self.fields[key].widget.attrs.update(css2)