awtk/demos/res/raw/theme/dialog1.xml

<button bg_image_draw_type="3patch_x" text_color="blue">
  <style name="100:green_btn" >
    <normal   bg_image="green_btn_n" />
    <pressed  bg_image="green_btn_p" />
    <over     bg_image="green_btn_o" />
  </style>

  <style name="101:red_btn">
    <normal   bg_image="red_btn_n" />
    <pressed  bg_image="red_btn_p" />
    <over     bg_image="red_btn_o" />
  </style>
</button>