{ "id": "045", "instruction": "Use a Levels adjustment on the red channel to create a strong visible red-magenta shift in the image's midtones.", "difficulty_level": "easy", "type": "Color Adjustment", "resources": { "input_file": "045_start.jpg" }, "reference_output": { "expected_file": "045_end.jpg" }, "source": "manual", "layer_related": true, "rubric_file": "045_rubric.json" }