So this is my first try at mixing. I wanted a darker red black so i mixed 3 ml of diamine poppy red and 2/3 ml of noodlers bulletproof black. Or 2 parts noodlers black to 9 parts diamine poppy red. I apologize about the quality of the picture. Nice color. When water hits tge red starts to wash away but the black stays. http://i282.photobucket.com/albums/kk245/WIKKID85/me/pen%20stuff/CAM00340-1.jpg