I have lived near the Lake for most of my life and been drawn to its beauty. One day I went for a walk with my family and found sea glass in the jewel theme colours of lavender, pinks, clear, green, then imagine sand and turquoise themes, hence colours of the water and land near a beach. There are many ways you can go with this them.
On Pinterest, you would Create a Board. Match up colour themes to that main picture you have chosen as your guiding colour theme.
So I came up with: THIS