I just hiked up the Beaver Brook/Benton approach this weekend. There was a clear-looking herd path to Blue, relatively flat-looking, marked by a small cairn at the height of land as the trail traversed the sub-peak. Looked pretty straight-forward. From the Asquam junction, the trail is level for a bit, then climbs for a bit, then see-saws up and down roughly along the rim of Jobildunk Ravine, with intermittent views across into the ravine and to the main summit ridge. Perhaps a mile in, the trail sharply diverts up and right from an older routing. Maybe 1/3 mile from there in a level-ish area, at height of land for the trail, is where the small cairn is. Looked to be a side trip of 0.2 or so each way.
I skipped on Blue b/c I had a hiking partner behind me, not sure how far, and didn't want to get things mixed up.