Resolve "improve colors readability"

Closes #54 (closed)

src/css/custom.css

@@ -12,8 +12,8 @@
 /* You can override the default Infima variables here. */
 :root {
   --ifm-color-primary: #000000;  
-  --ifm-color-dark-green: #6b832b;
-  --ifm-color-light-green:#8ba937;
+  --ifm-color-dark-green: #577018;
+  --ifm-color-light-green:#8EA34E;
   --ifm-color-frame: #FFC729;
   --ifm-color-tonic-one: #E07931;
   --ifm-color-tonic-two: #B3433B;