[kurapica.igas]

Originally Posted by Layback_ Hi kurapica.iga, Thank you for your advice What about the borders for debuffs? As you know some debuffs have a different border colors based on their types (like red or blue). Would this be considered on BuffButton_OnLoad or SetTexture functions?

Well, I make some problem, write it again :

local original_SetVertexColor   -- Keep a copy so it won't trigger the hook again
 
hooksecurefunc("BuffButton_OnLoad", function(self)
    -- the self is aura button
 
    -- For cut icon
    local icon = _G[self:GetName() .. "Icon"]  -- miss this
    hooksecurefunc(icon, "SetTexture", function(self, path)
        if path then
            -- Cut the icon
            self:SetTexCoord(0.06, 0.94, 0.06, 0.94)
        end
    end)
 
    -- For the debuff border color
    local debuffSlot = _G[self:GetName().."Border"]
    if not original_SetVertexColor then original_SetVertexColor = debuffSlot.SetVertexColor end
 
    hooksecurefunc(debuffSlot, "SetVertexColor", function(self, r, g, b)
        -- You can only use original_SetVertexColor  to change border color
        -- debuffSlot:SetVertexColor(1, 0, 0)  wrong, it'll cause Infinite loop
        original_SetVertexColor(debuffSlot, 1, 0, 0)   -- that's okay
    end)
 
    -- do other skin job
end)

Don't try to replace the methods directly, it'll cause taint error.