[Lyak]

I've also tried something like this:

------------------------------------------
-- Variable
------------------------------------------
 
local LSM = LibStub("LibSharedMedia-3.0");
local fontA = LSM:Fetch("font", "fontA");
local textureB = LSM:Fetch("statusbar", "textureB");
 
local UpdateMedia;
local CreateAuraFrame;
local CreateHealthText;
 
local OnEvent;
 
------------------------------------------
-- Function
------------------------------------------
 
function UpdateMedia(nameplate)
    local unitFrame = nameplate.UnitFrame;
 
    local name = unitFrame.name;
    if (name) then
        name:SetFont(fontA, 14, "OUTLINE");
    end
 
    local healthBar = unitFrame.healthBar;
    if (healthBar) then
        healthBar:SetStatusBarTexture(textureB);
    end
 
    local castBar = unitFrame.castBar;
    if (castBar) then
        castBar._SetStatusBarTexture = castBar.SetStatusBarTexture;
        castBar:SetStatusBarTexture(textureB);
        castBar.SetStatusBarTexture = function(...) end;
 
        castBar.Text:SetFont(fontA, 12, "OUTLINE");
    end
end
 
function OnEvent(self, event, ...)
    if (event == "NAME_PLATE_CREATED") then
        local nameplate = ...;
        if (nameplate and nameplate.UnitFrame) then
            UpdateMedia(nameplate);
            -- CreateAuraFrame(nameplate);
            -- CreateHealthText(nameplate);
        end
    end
end
 
local handler = CreateFrame("Frame");
handler:RegisterEvent("NAME_PLATE_CREATED");
handler:RegisterEvent("NAME_PLATE_UNIT_ADDED");
handler:RegisterEvent("NAME_PLATE_UNIT_REMOVED");
handler:SetScript("OnEvent", OnEvent);

So, on nameplate creation, the SetStatusBarTexture is backed up with a name _SetStatusBarTexture, call SetStatusBarTexture then SetStatusBarTexture is now set to empty function.

This worked fine when the player is not in the combat, but once the player is in the combat, it causes the following error.

1x [ADDON_ACTION_BLOCKED] AddOn 'LyakNameplate' tried to call the protected function 'SetTargetClampingInsets()'

Would there be any secure way to tweak the texture of nameplate's castbar...?