Change label colors/order again

Solarized's green color is pretty awful, not really attractive for
Exemplary comments. This switches Exemplary to blue, Joke to green, and
Offtopic to cyan. It also rearranges the order a bit so that the colors
in the labeling menu go in a progression that looks right.

tildes/scss/_variables.scss

@@ -36,10 +36,10 @@ $topic-tag-nsfw-color: $red;
 $topic-tag-spoiler-color: $yellow;
 
 // Colors for comment labels
-$comment-label-exemplary-color: $green;
-$comment-label-joke-color: $cyan;
+$comment-label-exemplary-color: $blue;
+$comment-label-joke-color: $green;
 $comment-label-noise-color: $yellow;
-$comment-label-offtopic-color: $blue;
+$comment-label-offtopic-color: $cyan;
 $comment-label-malice-color: $red;
 
 $sidebar-width: 300px;

tildes/tildes/enums.py

@@ -41,8 +41,8 @@ class CommentLabelOption(enum.Enum):
     """Enum for the (site-wide) comment label options."""
 
     EXEMPLARY = enum.auto()
-    JOKE = enum.auto()
     OFFTOPIC = enum.auto()
+    JOKE = enum.auto()
     NOISE = enum.auto()
     MALICE = enum.auto()