<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def accel_increase_transparency(self, *args):
 """Callback to increase transparency. """

        transparency = self.settings.styleBackground.get_int('transparency')
        if int(transparency) - 2 > 0:
            self.settings.styleBackground.set_int('transparency', int(transparency) - 2)
        return True