feat(themes): 1950s and Coffee default to using Rose font set

data/themes/1950s.toml

@@ -17,3 +17,5 @@ menu_title = "#fff"
 background = "#EAE7D6"
 home_section_odd = "#EAE7D6"
 home_section_even = "#EAE7D6"
+
+font = "rose"

data/themes/coffee.toml

@@ -17,3 +17,5 @@ menu_title = "#fff"
 background = "hsla(16, 24%, 85%, 1)"
 home_section_odd = "hsla(16, 24%, 85%, 1)"
 home_section_even = "hsla(16, 24%, 80%, 1)"
+
+font = "rose"