I've seen this color called "Virtual Blue". New and unused. Fine steel nib.
Waterman Kultur Blue Demonstrator Fountain Pen
New and unused. Fine steel nib. Cartridge/converter fill (not included).
Waterman Kultur set in Soft Touch Translucent Yellow – NIB
The "Soft Touch" translucent yellow has a pleasing tactile feel. The inner workings can be seen through the translucent body.