Here’s a new Star Wars Helmet inline with the official Lego Helmet Collection.
There’s still something I’m not happy about, but I’m not sure I can do better
The Emperor’s Royal Guard, also known as the Imperial Royal Guard, the Imperial Guard, or simply the Royal Guard, and under the Galactic Republic as the Red Guard, was an elite unit whose members served as personal bodyguards to the Galactic Emperor.
Any part that is not red or black, can be any other color

UPDATE: Just added the Shadow Guard version as a bonus!