Don't forget... orange too is a terrible color to have to paint (cos, ya know, it's a mixture of yellow and red)... I hate painting yellow and orange!
A little more on Vallejo and brushes:
As for the "strangeness" of vallejo... to me it was easy to use as I do paintings (on canvas or paper) in watercolor, acrylics and oils; vallejo style acrylic is just another medium to get use too, and to me it handles closer to watercolor than acrylic. So, use good watercolor brushes -- I suggest a #2, #4 Round watercolor paintbrush for details (for fine details use smaller round brushes), and a watercolor glaze/wash brush that is big enough for your painting needs to cover big spaces on a model in the sam color.