There's a follow up video with variations of the technique (some of them with color) demonstrated in a game: https://www.youtube.com/watch?v=EzjWBmhO_1E https:/

There's a follow up video with variations of the technique (some of them with color) demonstrated in a game: https://www.youtube.com/watch?v=EzjWBmhO_1E https://www.youtube.com/watch?v=EzjWBmhO_1E But yes, there's still the issue of oblique angles looking different that still remains open AFAIK.