I'd say that's a bad sign. PJ uses neutral grey as its bdefault background because it lacks character of its own, so the colours of the pixel art can do their work without much outside influence. If you're using such bland colours, that means your work probably lacks character too ): Try to avoid true neutral colours, there are almost always better alternatives. Think about the mood you want to convey, and think about the light sources in your scene. These should influence your colours.
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I'd say that's a bad sign. PJ uses neutral grey as its bdefault background because it lacks character of its own, so the colours of the pixel art can do their work without much outside influence. If you're using such bland colours, that means your work probably lacks character too ): Try to avoid true neutral colours, there are almost always better alternatives. Think about the mood you want to convey, and think about the light sources in your scene. These should influence your colours.