Video Tutorial:
The color picker in Lumion allows you to copy paste (CTRL + V) values from other programs. The color needs to be in hexidecimal color code like 0a4f35.
Made in version: Lumion 7.0 Pro.
See also:
Knowledge Base: How do you use specific colors from sources outside Lumion?
Knowledge Base: How do you change the color of cars, trees and furniture?