Star Wars: Visions - Anime Anthology Series

[Set Harth]

Also, unless that droid was a Force user, they seem to have forgotten the idea from the original episode that these new lightsabers change color to reflect the Force power and alignment of the wielder.

Not sure what the problem is here... that kind of thing wouldn't apply to a droid.

As to whether the droid is a Force user: the answer would be no, because:
1) if he was a Force user, he wouldn't have needed Kara to move the rubble; and
2) it's a droid!