Psychology of color in design and communication
All colors are not the same! Use colors that match your message. This is second nature to graphic designers, but not necessarily for the rest of us. And in some cultures, colors may have a special significance, often religious, that we are unaware of.
Blue in the Bible - a Christian perspective
In Numbers God tells Moses to tell the Israelites to put blue cords in a tassel on the corners of their garments.
Purple - a Christian perspective
When Jesus was about to be crucified they mocked him by dressing him up in a purple robe. Purple was the color of royalty and it was purported that Jesus was trying to become King of the Jews.