Someone posted a image if a rainbow of rocks they picked out from a area in Northern Costa Rica. I found the colors absolutely lovely and had to make a colour pallette. She thought it was cool and made a collage of the two. I had to share it here cause they are nice natural tones for even work here in Matt's wonderland. Already have a piece in mind.
Update: Added an alt colour palette from same image with RGB colour values.
Image credit to Chris Patton-McQueen, original photo by Michelle Curiel