Create an Expert from an indicator

Hallo,

I need you again,

pls what will cost  an EA from a simple indicator that should only go buy if the Indicator shows the long direction (Dimgray color), and sell if short direction shows (Darkgodenrod color).

The EA should open an Orden immediately if the indicator new color shows, and keep until the indicator changes color, and than takes  another in the other direction. 

Thanks