Sorry but unless you had that shader in your inventory (not on a item) when collections were introduced or have found it since it will not be available.
You can try to dismantle items that gavd the shader you want but it is only a chance of obtaining it off the item.
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Thanks for the response @GreatCyberboy, That's a shame, was hoping I wouldn't have to leave it up to rng. I appreciate the info!