“This is beta software from IBM and does not represent a commitment, promise or legal obligation by IBM to deliver, in a future release of Notes/Domino or Lotus Notes Traveler, any material, code or functionality described/shown in this presentation.”
Maybe not all the colors of the rainbow but oneUI has been updated in Domino 8.5.3 to version 2.1 which includes a couple of new colors, yes, including pink.
The new oneUI V2.1 colors are : Blue, Gold, Green, Onyx, Orange, Pink, Purple, Red and Silver
You can use all of these themes in your own applications by pointing the theme name to oneuiv2.1_xxx where xxx is one of the colors above or you can extend your own themes using the same theme name. There is also a oneuiv2.1 theme with no specific colors and a oneuiv2.1_gen1 which I still need to look into.
All of these themes still use Dojo’s Tundra CSS for the Dojo elements and not the newer Claro theme however it probably wouldn’t be too much work to copy the supplied theme files and replace all references of Tundra with Claro if you prefer that look and feel for your dojo widgets.
The Domino 8.5.3 installer code no longer removes any theme files that you may have created yourself in the dominoxspnsfthemes folder. In the past if you created a theme file here and then upgraded your Domino server your theme files would be removed. This fix allows you to create your own company standard theme file that you can then just reference from your XPages applications or you may have some special themes for mobile devices that you can use with the ExtLib Mobile Controls in this folder.