5 Finger labels can be added, either in dots or below strings.
6 Dot color can be changed, and fingering label font size
12 \layout { ragged-right = ##t }
25 %% C major for guitar, verbose style
26 \override TextScript #'fret-diagram-details
27 #'finger-code = #'below-string
29 \fret-diagram-verbose #'((mute 6)
37 %% C major for guitar, verbose style
38 \override TextScript #'fret-diagram-details
39 #'string-label-font-mag = #0.4
41 \fret-diagram-verbose #'((mute 6)
49 %% C major for guitar, verbose style
50 \override TextScript #'fret-diagram-details
51 #'finger-code = #'in-dot
53 \fret-diagram-verbose #'((mute 6)
61 %% C major for guitar, verbose style
62 \once \override TextScript #'fret-diagram-details
65 \fret-diagram-verbose #'((mute 6)
73 %% C major for guitar, verbose style
74 \once \override TextScript #'fret-diagram-details
75 #'dot-label-font-mag = #0.75
77 \fret-diagram-verbose #'((mute 6)