Topic category: Troubleshooting, bugs, and solutions
I don't know if this is the right category for this post, but here you go:
GUIs made with MCreator have the wrong colors that don't match the vanilla's GUI colors (example: the white outline of slots generated by MCreator's GUI editor is not #FFFFFF like the vanilla GUIs have it). I hope you understand what I'm saying. Why is this a thing? Is it needed? It would be cool if it wasn't like that.