Using modern colors from designs of today is great, but there are other, older methods of getting color inspiration. Inspirations from the Masters: Matisse, Monet, DaVinci, Degas. You can find their work and more at the ARC site, (aka, the Art and Renewal Center).
Take a look a the site. There are so many beautiful images. Here's one of a lovely angel. What do you think about the colors of her wings? Blues, browns and yellows.
That red is throwing me off. It's not a true red, more of a coral. One thing is for sure, I love, love, love the colors. I'm thinking this would make an excellent Winter card design. Hum, you may see a card or two up soon using this color theme.
Thanks for reading.