feat(colors): add type modifiers for dark colors

[#99441746]

Signed-off-by: Matt Royal <[email protected]>

src/pivotal-ui/components/typography/typography.scss

@@ -461,6 +461,14 @@ Here's a table of all the color classes.
 .type-dark-1 { color: $dark-1 !important; }
 .type-dark-2 { color: $dark-2 !important; }
 .type-dark-3 { color: $dark-3 !important; }
+.type-dark-4 { color: $dark-4 !important; }
+.type-dark-5 { color: $dark-5 !important; }
+.type-dark-6 { color: $dark-6 !important; }
+.type-dark-7 { color: $dark-7 !important; }
+.type-dark-8 { color: $dark-8 !important; }
+.type-dark-9 { color: $dark-9 !important; }
+.type-dark-10 { color: $dark-10 !important; }
+.type-dark-11 { color: $dark-11 !important; }
 
 // teal type