For a vast array of opinions on color, color theories, interesting color palettes and fascinating color patterns, The Frame Maker recommends the online community www.colourlovers.com, which states as its mission:
COLOURlovers™ is a resource that monitors and influences color
trends. COLOURlovers gives the people who use color – whether for
ad campaigns, product design, or in architectural specification –
a place to check out a world of color, compare color palettes, submit
news and comments, and read color related articles and interviews.
Recent examples of palettes featured on their site: