Palletes, like colors are not private property. Inspiration can come from ANY source whatsoever. Often a palette alone can inspire. Now go add some color to that monotone room of your.

I go for bold colors, but try to keep the saturation down all the time (around 100 for the base color) unless it's a certain surface or lighting that requires any different. I stick to what colors I know, it seems. Tealish blues, bold reds, and greens that hover around an olive color. Shadows generally make the hue of the color they're covering go towards a blue, since atmosphere is blue and with outdoors, sunlight (probably including the light reflected from the moon too, it'd make sense because the moon really has no reason to change the hue and night is fairly blue...) is actually blue. Although indoor light is most often a tint of orange and I really don't know what color it would make the midtone turn into, so I just ballpark it.

Now I'm just rambling...