Attached is a multi-line example, generated with the following code in the view's tab menu
Thumbnails > Thumbnail Text...<font color="FF7F50"><b>[Artist]<//b><//font>
<font color="3CFF3D">[Album]<//font>
<font color="00FF00">'right([Year (Release)],2)<//font> <font size="85">FormatDate(convertdate([Date Acquired]),M//d//yy)<//font>
Thumbnails > Thumbnail Text Lines... = 4.
Note: third line of code includes two custom library fields, but you get the idea - lots of flexibility with MC's Expression Language.
Reference: Section "HTML Font Properties" near the bottom of the wiki page for
Expression Language:
https://wiki.jriver.com/index.php/Expression_LanguageThere are also numerous examples in old MC forum threads.
Using this approach you can customize font properties for each tab individually, and the customization generally persists when you change standard skins.