The Silver Vulpes Dye is an item used to change a wolf's pelt colour to Silver Vulpes. Silver Vulpes is a common rarity pelt, I believe. This is the Silver Vulpes pelt colour with no markings.
The Silver Dapple Dye is the same as the Vulpes, but it changes the pelt to Silver Dapple, which is a Rare base. This is the Silver Dapple pelt, with no markings.
Whereas Crystalline pelt Dyes can only be obtained by member trades or through Bree, using Geodes. Silver Vulpes Dye and Silver Dapple Dyes can be bought during the August Event with Event Currency, or through member trades. Crystalline is a rarity score within itself, just like Rare, Uncommon, Legendary etc.
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