I am pretty sure that the problem is in incompatible OptiFine version. Try downloading latest OptiFine from the official site: Optifine Downloads, or consider excluding OptiFine at all.
Yes. This way. Can you please edit your big message (the previous one), remove text from it and post latest.log there instead. Thank you very much.
Log file says that problem is in game settings. Go to your minecraft folder and rename "options.txt" to any other name ("optionsbackup.txt", for example) and try starting your minecraft with both Forge and Optifine.
Please, edit your message and post FILE (yes, you can) instead of posting it's CONTENT. This text uses to many space. Or at least post the text under the spoiler.
Go to your minecraft folder logs folder (Windows %AppData%/Roaming/.minecraft/logs) and post latest.log. If you are running server, post logs/latest.log from server folder.
Crash log says that Tinkers-Defense-Mod-1.12.2.jar is "Errored". Try temporary removing it from the mod list.
P.S.: Here is crash log packed in file if someone's interested.
CrashLog.txt
I don't understand you. Do you want to paint your entity in black? If yes, then create a black one texture (you can add texture at the left bottom box) and drag this texture to the model or to it's parts (located at right bottom box).