From the Shaded Silver Persian/Exotic Standard
"Tipping must be at least ‘5mm’ in depth. Shading of the appropriate
colour to appear up the back of hocks.
Tarnished silver on some areas of the face while undesirable should not militate against and otherwise outstanding
exhibit, as this can be an expression of the agouti gene in shaded silvers.
NB: Colour of the Shaded silver must be very light underneath shading to silver as it rises, tipping preferably not being less
than “5mm”, giving an overall impression of soft pewter, in contrast to the sparkling appearance of the Chinchilla"
Source: Persian [http://www.nzcf.com/breeds/sop/Persian.pdf]
"Tipping must be at least ‘5mm’ in depth. Shading of the appropriate
colour to appear up the back of hocks.
Tarnished silver on some areas of the face while undesirable should not militate against and otherwise outstanding
exhibit, as this can be an expression of the agouti gene in shaded silvers.
NB: Colour of the Shaded silver must be very light underneath shading to silver as it rises, tipping preferably not being less
than “5mm”, giving an overall impression of soft pewter, in contrast to the sparkling appearance of the Chinchilla"
Source: Persian [http://www.nzcf.com/breeds/sop/Persian.pdf]