custom_uniform_textures.sqf

//init.sqf

My_fnc_addCustomUniform = {
    params [["_unit", objNull, [objNull]], ["_uniform", "", [""]], ["_texture", "", [""]]];

    _unit addUniform _uniform;

    if (_texture != "") then {
        _unit setObjectTextureGlobal [0, _texture];
        (uniformContainer _unit) setVariable ["custom_texture", _texture, true];
    };
};

0 spawn {
    waitUntil {!isNull player};

    player addEventHandler ["Take", {
        params ["_unit"];

        private _texture = (uniformContainer _unit) getVariable ["custom_texture", ""];

        if (_texture != "") then {
            _unit setObjectTextureGlobal [0, _texture];
        };
    }];
};

//Replace all `addUniform` with:
[player, "U_B_CombatUniform_mcam", "#(rgb,8,8,3)color(1,0,0,1)"] call My_fnc_addCustomUniform;