When you are looking for inspiration for your color palette, look everywhere in nature. The world is literally art your fingertips. From around the world, people are sharing the beauty of the world. From oceans to deserts, flowers to rock formation, nature has a color palette which has proven itself through the test of time.
While I have pulled out six colors in the palettes I have created, there is an abundance of colors inside each palette photograph I share. Get creative with how you plan how to utilize each color. It is a minimal cost of your project to create, download, or purchase a template in which you can take into a paint app and apply the different colors to create a miniature of your business space.
You can either do this in a flat space, or get creative and build it in a three dimension physical miniature using furniture templates you cut and paste together. If you are wanting to go a bit further, you can purchase miniature pre-made furniture at a craft store and get small cans of the color palette paint to paint the furniture, wall, and add the décor. Professional interior designer do both. If you can't afford a professional designer, you can still apply what designers do and build several different prototypes.
In this color palette you have a choice of going with a main light colors using the dark as accents, or reverse them and use the dark colors as the main with the lighter colors as accents. This color palette leaves room to add natural elements of plants and wood tones. You could also go more contemporary with this palette.