The white Faber Castell Pitt brush markers are so cool - as are the others. I have about 30 of the 60 colors and was experimenting with something bold, that would look nice with a layer of white. The black outlines were too heavy. It would have been better to show a progression - so I will do some more experiments with these markers. I used a Galaxy marker for the outline which is more of a paint marker. They are more opaque. But, I do not know where to get them. They aren't the best in terms of durability. Some of the nibs fall off. Many places stopped carrying them. I'll try to do something that does not rely on black - or find a better opaque black marker.