Since we are on the subject, I found Cover Design Studio to be an interesting read in regards to their page on best colors for book covers. Below is a helpful reminder of the tone certain colors invoke when used in a design. If I were to follow this chart for my cover design then I would say dark red and grey would more closely align with the tone of the story compared to my previous colors of green and orange.
| Red | Energy, enthusiasm, emotion, power |
| Dark Red | Passion, depth, dominance, prestige |
| Orange | Positive, dynamic, optimistic, confident |
| Pale Yellow | Friendly, approachable, warm |
| Bold Yellow | Ambition, motivation, creativity, cutting edge |
| Green | Nature, vitality, environment, health |
| Blue | Dependability, trust, thoughtfulness, calm |
| Dark Blue | Deep sincerity, intuition, truth |
| Light Purple | prosperity, spirituality, creativity, harmony |
| Dark Purple | Depth, wealth, mystery, fantasy |
| Grey | Sophistication, knowledge, prestige, wisdom |
| Pink | Youth, playfulness, emotion, innocence |
| White | Clean, straightforward, self-sufficient, simple |
| Black | Authority, power, control, mystery, suspense |
| Brown | Natural, of the earth, comfortable, organic |