White Blanks I've found:
Snow acrylic from Woodcraft
Solid white from Wooden Pen Pro
White Pearl from Ed Brown (ed4copies)
Maroon Blanks I've found:
Burgundy acrylic form Woodcraft and Bear Tooth Woods (same blank)
Violet Flake from Wooden Pen Pro (I think Bear Tooth Woods has this one too)
Burgundy Pearl from Ed Brown (ed4copies)
I have a picture of a Euro pen made with the Bear Tooth Woods/Woodcraft Burgundy and the Snow acrylic in my album. I need to take pictures of a 8mm Berea Euro I made with the Violet Flake from Wooden Pen Pro. I am working on a Baron that will use the Burgundy and White Pearls I got from Ed. One last thing, if you want a solid maroon, don't buy the blank labeled burgundy at Wooden Pen Pro. It is a swirled blank that is more red than maroon/burgundy. A nice blank but not what you're looking for.
Wendell