I drew some sprites in Photoshop, saved them as PNGs, and when I put them to Unity, their colors become like dull or dark. What’s wrong?
Do you have lighting in your scene? Try adding a directional light. Sorry if this answer is patronising, I apologize if this answer is patronizing, I don’t have a lot of info to go on. If this is not the case, look at the shader applied to the object and try tweaking it.