Attempt Number: 2
Error Message: Invalid change-color action: color must change to a different available color.

Action Reasoning:
The last action taken was a move to the right, and the robot is currently holding a black paint gun. According to the rules, after a move, the next action should be to change the color of the paint gun. The robot is currently on tile_1-4, and the tile directly above, tile_0-4, needs to be painted black to match the goal state. Therefore, the robot should change its paint gun color to black in preparation for the next paint-up action.

New State Description:
Robot1 is on tile_1-4, holding a black paint gun. The robot is ready to paint the tile above it, tile_0-4, with black.

Action Chosen:
change-color(robot1, black, black)
