The short answer
Yes, they do, although very few GMs do and by a margin of less than 10%.
An example is GM Joseph Gallagher. As you can see in his FIDE profile page, he has the following games record (as for 15 Dec. 2020):
White +124 =118 -73, score = 58.1%
Black +126 =124 -67, score = 59.3%
The long answer
To obtain the figure above I used the games published by TWIC, issues 920-1358 (25 Jun. 2012 to 16 Nov. 2020). I selected games where at least one of the players was a GM. And I kept only players with more than 50 games in the dataset. This ensures that scores are calculated with a 90% confidence interval of at least ±3%, and since players in the dataset have in average a couple of hundred games scores are usually still more accurate. The resulting dataset had 561K games for 1168 GM players.
In this case, the average scores where 65.5% for white and 56.9% for black. This is higher than in the databases you mention because being a GM most other players have a lower rating and they're more likely to win. (If I took only the games where both players were GMs, the average scores were 52.9% for white and 43.3% for black.)
As shown in the figure above, the average difference of scores between both colors is 8.6%, favorable to white. Still, there were 38 players who had better results overall with black. The five players with the highest difference in performance favorable to black in the dataset were:
WhiteScore BlackScore Difference
Bryan Smith 55.2 62.9 7.8
Essam El Gindy 52.0 58.8 6.9
Jean-Luc Chabanon 50.5 57.2 6.7
Justin Tan 54.5 61.2 6.7
Mihai Suba 57.9 63.8 5.9
I would like to bring your attention to one of these players, Mihai Suba, who is known for his book Dynamic Chess Strategy. In it he disagrees with white's first move advantage theory.
Note: If you look at these players' FIDE profile pages, you might find some discrepancies, due to the different characteristics of both datasets. The FIDE data includes all FIDE rated games (whether the player was already a GM or not); while my dataset contains games published on TWIC (FIDE rated or not) from 2012 to 2020 only if the player was already a GM.
But is it a correct answer?
Now, just because of randomness we would expect that some players had better results with black than with white. But is it the case? Do those players really perform better with black pieces or is it simply a random illusion? To check this I plotted the evolution of the score difference as the number of games increases for several players.
As you can see, the score difference varies widely when there are few games. But as the number of games increases, the variability decreases. In some cases, the score difference remains consistently above 0. In other cases, it occasionally crosses the line.
So, yes, there are some cases that cannot be considered a statistical artifact.
And what about differences in style?
You didn't really ask about it, but since you mentioned it in your question I had a look at it. For this I divided the players in three groups according to their score difference:
- Upper 5%: Mostly players with better results with black
- Lower 5%: Players with much better results with white
- Those in the middle
And then I looked which kinds of openings they used, classified according to the five main ECO categories:
- A: Flank openings
- B: Semi-Open Games other than the French Defense
- C: Open Games and the French Defense
- D: Closed Games and Semi-Closed Games
- E: Indian Defenses
It would seem that GMs who have better results with black pieces tend to use openings of the groups A and B more often than the other players, and the other groups less often. Although more detailed analyses would be necessary to arrive at more solid conclusions, this can give you some food for thought.