on your skins you have a grey zero. please add these lines to switch it off.
--F16_bl50_NOUSE_1_DECAL--
{"F16_bl50_NOUSE_1_DECAL", DIFFUSE, "f16_bl50_main_1", false};
{"F16_bl50_NOUSE_1_DECAL", NORMAL_MAP, "f16_bl50_main_1_normal", true};
{"F16_bl50_NOUSE_1_DECAL", ROUGHNESS_METALLIC, "f16_bl50_main_1_roughmet", false};
{"F16_bl50_NOUSE_1_DECAL", DECAL, "empty", true};
--F16_bl50_NOUSE_1_BORT_NUMBER_001--
{"F16_bl50_NOUSE_1_BORT_NUMBER_001", DIFFUSE, "f16_bl50_main_1", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_001", NORMAL_MAP, "f16_bl50_main_1_normal", true};
{"F16_bl50_NOUSE_1_BORT_NUMBER_001", ROUGHNESS_METALLIC, "f16_bl50_main_1_roughmet", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_001", DECAL, "empty", true};
--F16_bl50_NOUSE_1_BORT_NUMBER_010--
{"F16_bl50_NOUSE_1_BORT_NUMBER_010", DIFFUSE, "f16_bl50_main_1", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_010", NORMAL_MAP, "f16_bl50_main_1_normal", true};
{"F16_bl50_NOUSE_1_BORT_NUMBER_010", ROUGHNESS_METALLIC, "f16_bl50_main_1_roughmet", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_010", DECAL, "empty", true};
--F16_bl50_NOUSE_1_BORT_NUMBER_100--
{"F16_bl50_NOUSE_1_BORT_NUMBER_100", DIFFUSE, "f16_bl50_main_1", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_100", NORMAL_MAP, "f16_bl50_main_1_normal", true};
{"F16_bl50_NOUSE_1_BORT_NUMBER_100", ROUGHNESS_METALLIC, "f16_bl50_main_1_roughmet", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_100", DECAL, "empty", true};
--F16_bl50_NOUSE_1_BORT_NUMBER_1000--
{"F16_bl50_NOUSE_1_BORT_NUMBER_X100", DIFFUSE, "f16_bl50_main_1", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_X100", NORMAL_MAP, "f16_bl50_main_1_normal", true};
{"F16_bl50_NOUSE_1_BORT_NUMBER_X100", ROUGHNESS_METALLIC, "f16_bl50_main_1_roughmet", false};
{"F16_bl50_NOUSE_1_BORT_NUMBER_X100", DECAL, "empty", true};
--F16_bl50_NOUSE_2_BORT_NUMBER_001--
{"F16_bl50_NOUSE_2_BORT_NUMBER_001", DIFFUSE, "f16_bl50_main_2", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_001", NORMAL_MAP, "f16_bl50_main_2_normal", true};
{"F16_bl50_NOUSE_2_BORT_NUMBER_001", ROUGHNESS_METALLIC, "f16_bl50_main_2_roughmet", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_001", DECAL, "empty", true};
--F16_bl50_NOUSE_2_BORT_NUMBER_010--
{"F16_bl50_NOUSE_2_BORT_NUMBER_010", DIFFUSE, "f16_bl50_main_2", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_010", NORMAL_MAP, "f16_bl50_main_2_normal", true};
{"F16_bl50_NOUSE_2_BORT_NUMBER_010", ROUGHNESS_METALLIC, "f16_bl50_main_2_roughmet", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_010", DECAL, "empty", true};
--F16_bl50_NOUSE_2_BORT_NUMBER_100--
{"F16_bl50_NOUSE_2_BORT_NUMBER_100", DIFFUSE, "f16_bl50_main_2", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_100", NORMAL_MAP, "f16_bl50_main_2_normal", true};
{"F16_bl50_NOUSE_2_BORT_NUMBER_100", ROUGHNESS_METALLIC, "f16_bl50_main_2_roughmet", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_100", DECAL, "empty", true};
--F16_bl50_NOUSE_2_BORT_NUMBER_1000--
{"F16_bl50_NOUSE_2_BORT_NUMBER_X001", DIFFUSE, "f16_bl50_main_2", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_X001", NORMAL_MAP, "f16_bl50_main_2_normal", true};
{"F16_bl50_NOUSE_2_BORT_NUMBER_X001", ROUGHNESS_METALLIC, "f16_bl50_main_2_roughmet", false};
{"F16_bl50_NOUSE_2_BORT_NUMBER_X001", DECAL, "empty", true};