Check this out - Hands comparison between 3 captures:

http://postimg.org/image/wa6qhdrr3/

From left to right
1. From promo of Episode 8 of Season 06, Red John (Supposing it's really RJ in the scene with Jane)
2. From Episode 06,Season 06 - Sheriff at Jane's house
3. From Episode 13,Season 04 - Roy Tagliaferro holding a cup of tea at Rosalind's house

What do you think?