Code:
[REAPER]
ui_img=Smooth_6
tl_font=F3FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E73205365726966000000000000000000000000A1
mi_font=F5FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E73205365726966000000000000000000000000A3
lb_font=F5FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E73205365726966000000000000000000000000A3
lb_font2=F3FFFFFF00000000000000000000000090010000000000000302012243616C696272690020446C67000000000000000000000000000000000000000096
trans_font=F3FFFFFF00000000000000000000000090010000000000000302012243616C69627269004C696768740000000000000000000000000000000000000057
user_font2=F3FFFFFF00000000000000000000000090010000000000000302012243616C69627269000000000000000000000000000000000000000000000000005F
user_font4=F3FFFFFF00000000000000000000000090010000000000000302012243616C696272690030365F3635000000000000000000000000000000000000008F
user_font5=F0FFFFFF00000000000000000000000090010000000000000302012243616C69627269000000000000000000000000000000000000000000000000005C
user_font6=EFFFFFFF00000000000000000000000090010000000000000302012243616C69627269000000000000000000000000000000000000000000000000005B
user_font7=ECFFFFFF00000000000000000000000090010000000000000302012243616C696272690000000000000000000000000000000000000000000000000058
user_font10=EBFFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E7320536572696600000000000000000000000099
user_font1=F4FFFFFF00000000000000000000000090010000000000000302012243616C696272690000000000000000000000000000000000000000000000000060
user_font3=F1FFFFFF00000000000000000000000090010000000000000302012243616C69627269004C696768740000000000000000000000000000000000000055
user_font12=E5FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E7320536572696600000000000000000000000093
user_font11=E8FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E7320536572696600000000000000000000000096
user_font8=FBFFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E73205365726966000000000000000000000000A9
user_font13=E3FFFFFF00000000000000000000000090010000000000000302012243616C6962726900742053616E7320536572696600000000000000000000000091
How on earth do you change the fonts manually? :¬)
Looks like an encoded pointer to a system font. Shame you can't edit this like CSS with just font names, with backups, i.e.
tl_font: 'Minisystem', 'Fira Sans', 'Helvetica', 'sans-sefif'.