Thanks for playing and for the feedback, we really appreciate it!
You get the meanings right, the confusion with the green circle may be solved by noticing that a triangle can be inverted more than once. Then, two inversions leave a triangle in its original form. In the particular example of the green circle guy---wich says "Right Circle Down Circle"---Right gets inverted twice, and Down once---the solution being then "Right Up" (as can be checked in the corresponding level of the maze). Applying this rule, the endgame mechanic should be now straightforward.
I hope the explanation is good enugh ^^'. Again, thanks for playing!