firstname.lastname@example.orgRecords the color of the mensuration sign. Do not confuse this with the musical term
'color' as used in pre-CMN notation.
att.staffDef.email@example.comCaptures the colors of the staff lines. The value is structured; that is, it should
have the same number of space-separated RGB values as the number of lines indicated
lines attribute. A line can be made invisible by assigning it the same RGB value as
background, usually white.