程序执行后，创建一个能够加载选择颜色的下拉框的面板，用户可以选择下拉框内部的颜色值，也可以通过点击下拉框可以弹出一个颜色选择对话框，用户可以配置自己想要的颜色-After the program execution, can be loaded to create a drop-down box to select the color panel, the user can choose the color values within the drop-down box, you can also click on the drop-down box to pop up a color selection dialog box, users can build their own color