The way I'm reading what the article Zachary linked was in the purple they are leveling current ground, the orange is going to have something built up to that.
I didn't get that... The (dark) purple coincides with areas outside of the 50' Resource Protection Area (RPA) boundary, which they call "landward." Orange is inside of the RPA, which they call "seaward." The 50' RPA boundary line between them is delineated with a heavy red line, with "landward" and "seaward" referring to their relation to the RPA boundary ("sea" is inside, as greater potential impact to the bay).
As for uses, I originally took the right orange box to be the pad for the assumed Screamin' Swing, and the left to be for the compressor building S&S shows in their specs. The queue could connect from the Killarney walkway and snake through the (dark) purple area. The thin mostly orange line would be a wall of some sort, as it appears to be < 2.5' wide when I overlay and rotate the scale over it--so too narrow for a walkway, building code/ADA-compliant or not. Whether RPA or its buffer, the impacted areas need to be denoted as to their permanent or temporary impacts for the permitting process.
But I'm only saying the above on uses because of the shapes of the impacted areas and the ride/supporting infrastructure layout; that my theory coincides with the colors is a coincidence. And really the only one I'm fairly sure of is the ride's pad, assuming the S&S swing. There are many possible layouts for the queue and it's easy enough to drop a compressor building somewhere. (
edit: in fact, the more I think about it, the more I see a "dog leg" queue taking shape in the leftmost orange box and part of the dark purple, with additional separation between the queue and the arc of the swinging swing--so compressors go someplace else, probably closer to the actual ride).
At this point I'm leaning towards the four orange permanent impacts to the RPA (far left on one diagram) to be something unrelated, or to infrastructure that isn't necessarily tied just to this attraction, as it's outside of the limits of work for Project Ireland. I would keep an eye out for electrical permits at JCC to see if any are proposed for the "Ireland section of the park."