Sometimes it works and other time it works is due to the fact that it has excessive white meaning stopping the pigment production (the thing that make colour for anyone don't know the word pigment it still have the gene's to have the colour but it is just the exessive white that is causing to be white only)
I don't know what you wanted to achieve in this crossbreeding. If it was supposed to be an attempt at a new breed, or just to transfer color and color. You didn't succeed either, for a new breed the default pair should be uniform color and pattern, you should also have an idea of what the new breed should look like, select only the best ones in the given breed for breeding.
