<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def askcolor(color="red", parent=None, title=_("Color Chooser"), alpha=False):
 """ Open a ColorPicker dialog and return the chosen color. :return: the selected color in RGB(A) and hexadecimal #RRGGBB(AA) formats. (None, None) is returned if the color selection is cancelled. :param color: initially selected color (RGB(A), HEX or tkinter color name) :type color: sequence[int] or str :param parent: parent widget :type parent: widget :param title: dialog title :type title: str :param alpha: whether to display the alpha channel :type alpha: bool """

    col = ColorPicker(parent, color, alpha, title)
    col.wait_window(col)
    res = col.get_color()
    if res:
        return res[0], res[2]
    else:
        return None, None