Not you, "them." You said you got chewed out on another thread for using the term lavender.
Oh

I see now. Especially the colouring around the hackles - it's definitely not solid on the blues, but solid on the self bluesThe standard for blue is very different than the standard for self blue. "Self" denotes a solid coloured bird; no variations in shade, no patterns either on individual feathers or from one part of the body to another. You can blame the person who segregated (discovered) the lavender gene for its name.
Blue, sometimes called Andalusian blue, has both these primary and secondary patterns. Portions of the bird are a much darker blue, or even black; the lighter feathers are laced around the edge with this dark blue.
Porcelain is a combination of genes that create a specific pattern. It is mille fleur diluted by lavender. The lavender gene dilutes both red and black pigment; most other dilution genes dilute only one of the pigments, not both. Porcelain silkies do not have the full set of genes for the mille fleur pattern. Porcelains are not just diluted buff; they must have lavender on each feather, too.
Porcelain from feathersite and http://www.edelras.nl/belgians:
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self-blues (lavender) from feathersite and http://www.edelras.nl/belgians:
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blues from feathersite:
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