The fact that the OP is in thailand leads me to believe that it's not a bonnie plant.. From my experience, most producers in the far east grow for production and don't pay too close attention to the names of the vatiety. It's a thai chili.
Mine are pale light green and take for ever to change to orange. Haven't had the patience to get it to red yet. Was bought as a Bonnie container plant labelled Tobasco. Plenty of red peppers in the tag picture, but not yet on the plant.