Adding custom field and updating model problem in django

I need to add a colorpicker to my django model and wrote a custom widget. However when I add this colordfield to my model, django gives this error:

column mediaplanner_ievent.color does not exist
LINE 1: ...nt"."bits", "mediaplanner_ievent"."capture_link", "mediaplan...

My model is :

from mediaplanner.custom_widgets import ColorPickerWidget

class ColorField(models.CharField):
        def __init__(self,*args, **kwargs):
                kwargs['max_length'] = 10
                super(ColorField, self).__init__(*args, **kwargs)

        def formfield(self, **kwargs):
                kwargs['widget'] = ColorPickerWidget
                return super(ColorField, self).formfield(**kwargs)


class iEvent(models.Model):
    name = models.CharField(verbose_name= u"Uygulama Adı", max_length=100, unique=True)
    bits = models.CommaSeparatedIntegerField(verbose_name= u"Bitler",max_length=100)
    capture_link = models.URLField(verbose_name= u"Capture URL", null=True, blank=True)
    color = ColorField(blank=true) 
    class Meta:
        verbose_name = u"red button"
        verbose_name_plural = u"red buttonlar"

    def __unicode__(self):
        return smart_str( "%s"% self.name )

The strange thing is, when I looked my database, there exist colorfield. I don't want to delete the db and load it again. But ofcourse if it's th开发者_开发知识库e only solution, then no choice ..

So someone can help me how to solve it?

The field in your database is named colorfield bu the field in your model is named color. You have to change one or the other to make it work again.