[Ivette] Tweaks colors used for non-terminating and dead code gutters.

ivette/src/dome/renderer/dark.css

@@ -10,7 +10,7 @@
     --code-hover: #005137;
     --code-select: #4f3d24;
     --code-select-hover: #5f4d34;
-    --dead-code: #444;
+    --dead-code: #777;
     --non-terminating: #d84954;
     --highlighted-marker: #778822;
     --code-bullet: #0a2234;

ivette/src/dome/renderer/light.css

@@ -10,8 +10,8 @@
     --code-hover: lightgreen;
     --code-select: #ffda95;
     --code-select-hover: orange;
-    --dead-code: #bbb;
-    --non-terminating: #770088;
+    --dead-code: #999;
+    --non-terminating: #fb4e4a;
     --highlighted-marker: #ffff66;
     --code-bullet: #ddd;