Navigation of the website is divided in two groups. One on the top of the page and other in the middle.
The one on the top is general information about the collector and collection.
The middle one is supposed to present collection to the user.
So, we had three groups of stuff in collection and we wanted to separate it in these groups, but also to show it as a big group with all stuff together. That's why we used colors of RGB which together create white light. The white light is their whole, their major group. Since screen's picture is consisted from particles of RGB light which create all colors and all shades of gray, and this website is presentation in that medium it seamed as a cool idea to use this as a navigation.