less prominent styling of size changes

reusing the diff colors as suggested by @selfthinker

lib/tpl/dokuwiki/css/_recent.css

@@ -48,18 +48,17 @@
 /*____________ size differences ____________*/
 
 .dokuwiki li .sizechange {
-    color: #fff;
     font-size: 80%;
     border-radius: 0.2em;
     padding: 0.1em 0.2em
 }
 
 .dokuwiki li .sizechange.positive {
-    background-color: #6A6;
+    background-color: #cfc;;
 }
 
 .dokuwiki li .sizechange.negative {
-    background-color: #A66;
+    background-color: #fdd;
 }