Moved markup__link styling out of the theme definition cuz its identical anyway.

src/mami.css/markup.css

@@ -9,9 +9,16 @@
 }
 
 .markup__link {
+    color: #1e90ff;
     text-decoration: none
 }
 
-.markup__link:hover {
+.markup__link:hover,
+.markup__link:focus {
     text-decoration: underline
 }
+
+.markup__link--visited,
+.markup__link:visited {
+    color: #6B4F80;
+}

src/mami.css/themes/archaic.css

@@ -165,11 +165,3 @@
 .umi--archaic .markup__button:active {
     background-color: #222
 }
-
-.umi--archaic .markup__link {
-    color: #1e90ff;
-}
-.umi--archaic .markup__link--visited,
-.umi--archaic .markup__link:visited {
-    color: #6B4F80;
-}

src/mami.css/themes/blue.css

@@ -165,11 +165,3 @@
 .umi--blue .markup__button:active {
     background-color: #0e507a
 }
-
-.umi--blue .markup__link {
-    color: #1e90ff;
-}
-.umi--blue .markup__link--visited,
-.umi--blue .markup__link:visited {
-    color: #6B4F80;
-}

src/mami.css/themes/dark.css

@@ -165,11 +165,3 @@
 .umi--dark .markup__button:active {
     background-color: #3a3a3a
 }
-
-.umi--dark .markup__link {
-    color: #1e90ff;
-}
-.umi--dark .markup__link--visited,
-.umi--dark .markup__link:visited {
-    color: #6B4F80;
-}

src/mami.css/themes/light.css

@@ -165,11 +165,3 @@
 .umi--light .markup__button:active {
     background-color: #c9c9c9
 }
-
-.umi--light .markup__link {
-    color: #1e90ff;
-}
-.umi--light .markup__link--visited,
-.umi--light .markup__link:visited {
-    color: #6B4F80;
-}

src/mami.css/themes/purple.css

@@ -165,11 +165,3 @@
 .umi--purple .markup__button:active {
     background-color: #604c74
 }
-
-.umi--purple .markup__link {
-    color: #1e90ff;
-}
-.umi--purple .markup__link--visited,
-.umi--purple .markup__link:visited {
-    color: #6B4F80;
-}