Here are my suggestions, although I'm not sure of your coloring, so i don't know if they'd all work for you:
Fall
Reds, browns, yellows, oranges - warm colors definitely reign supreme. You could pair any of the warm colors with another in the family (i.e. mustard yellow with tomato red). These colors also work with ones on the opposite side of the color wheel (i.e. orange with blue or turquoise, yellow with deep purples). The colors should all be the same tone, so I wouldn't pair a mustard yellow with fluorescent pink. It would work better with a deeper saturated pink, if that makes sense.
I'd stay away from pastels. For metallics, gold is the obvious choice, being such a warm color, but don't rule out bronze or pewter. Silver can be a nice contrast to the deeper colors, too.
As always, black and white/cream are great with any of these colors.
Winter
You can still rock some of the richer colors, but cooler colors are great as well. So, think teal, icy blue, white, lavender, silver, and purple. These colors work well when paired together. These colors don't work as well with colors outside of their family, so I wouldn't necessarily veer to the other side of the color wheel for color mates. I could see yellow looking nice with these colors though, but only as a brief accessory.
Good neutrals for this color palette are navy, white/cream, black, or grey.