awtk/demos/assets/raw/styles/button.xml

<button>
  <style name="icon" icon="earth" border_color="#a0a0a0"  text_color="black">
    <normal     bg_color="#f0f0f0" />
    <pressed    bg_color="#c0c0c0" />
    <over       bg_color="#e0e0e0" />
    <disable    bg_color="gray" text_color="#d0d0d0" />
  </style>
  <style name="red_btn" bg_image_draw_type="patch3_x" text_color="blue">
    <normal   bg_image="red_btn_n" />
    <pressed  bg_image="red_btn_p" />
    <over     bg_image="red_btn_o" />
  </style>
  <style name="image" bg_image_draw_type="icon" text_color="blue">
    <normal   bg_image="play_n" />
    <pressed  bg_image="play_p" />
    <over     bg_image="play_o" />
  </style>
</button>