Do you care about the color or about the signal? Obviously there are 2 MA lines and the color depends on their position. And their position can be easily compared (and this will indirectly give you the color, if you really need it), you can check if the fastest MA is lower or above the slowest one. That should be at least 2 buffers for this indicator, one for each line.
Otherwise color or other attributes can be get from chart objects like arrows, lines and others. But I'm not sure that exactly these colorful areas are such types of objects, I think that they are something that the EA has no direct access to.
