It generates DARK images with the shadows and minimal light.
Depending on the model's base brightness, you may
1) generate character with black skin and/or
2) generate luminous backlighting.
What are the triggers? This model does not need any trigger.
Strengthening prompts: Umbr4, Black, Dark.
Recommended Weight Depending on the models used, the weight is good from 0.5 to 2.0.
On average, 0.8 to 1.3 have a more stable result.