That's funny, because I can't keep white ones in stock around nurses. They seem to go for the tradition. I sell some colored ones too, but I have sold over 100 sets of pens in marbled and pearl whites. The funny thing is that the gold titanium hardware is more popular than all of the silver, platinum, chrome, etc. combined. All of my sales are acrylic, except for a few who want a wood pen for home use. They don't want to chance wood in a hospital setting. I don't have a click pen in my rep yet, but I plan on adding the sierra click this summer. My biggest sellers are Barons in white, with two pen sets. One with black ink, and one with red. I make plastic inserts for the finials in red and black to color code the pens. A few have even had me make a thermometer case out of the matching material. They don't even use thermometers anymore, but they want the complete, traditionsl set. (I am not sure they even use the red ink anymore)
Most of the nurse customers I have end up buying several brightly colored pens to go with their white ones, but the traditional sets draw them in for the initial hook. One Nurse who works with my former girlfriend bought herself a white set and then ordered 32 more pens of all shapes, colors and styles to give away for Christmas. Maybe I need to change my marketing approach for medical people. I should steer them towards colors.