I am often asked the question: "how do you know what colors to use" or "where do you all get your color ideas from" or "you're just guessing when you tell us what colors will be 'in', right?"
Pantone has a wonderful website which is constantly updated. You can look at color palettes from other designers and subscribers, add your own palette, see many links and get a feel for the "story" of color.
Another very good site is:The Color Association of America; At this moment the opening image is nail polish! Fashion, yes, but it will translate to home and home products very quickly. The time lag is becoming shorter and shorter.