Adept paint is ugly and other shaders don't capture that torn ascendant skin and bone aesthetic as well.
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While none of them are precise matches, the following Shaders will give you [i]rough[/i] approximations of the standard color scheme for Heresy weapons: Subsequence Rising Seafoam Reaching Within Dark Omolon Crucible Lazurite (΄◉◞౪◟◉`)
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I've just been slapping Ancient Wisdom on them as a tribute to Oryx.