Update index.html (nim-lang#416)

Author: nimthenimble

jekyll/index.html

@@ -20,7 +20,7 @@ <h2>
           <a class="pure-button pure-button-primary" href="{{ site.baseurl }}/install.html">Install Nim {{ site.nim_version }}</a>
           <a class="pure-button" href="https://play.nim-lang.org/#ix=2lK1">Try it online</a>
         </div>
-        <h3>Efficient</h3>
+        <h3 style="color:#ffe953;">Efficient</h3>
         <ul>
           <li>Nim generates native dependency-free executables, not dependent on a virtual machine,
               which are small and allow easy redistribution.</li>
@@ -35,13 +35,13 @@ <h3>Efficient</h3>
           <li>Support for various backends: it compiles to C, C++ or JavaScript so that Nim
               can be used for all backend and frontend needs.</li>
         </ul>
-        <h3>Expressive</h3>
+        <h3 style="color:#ffe953;">Expressive</h3>
         <ul>
           <li>Nim is self-contained: the compiler and the standard library are implemented in Nim.</li>
           <li>Nim has a powerful macro system which allows direct manipulation of the AST,
               offering nearly unlimited opportunities.</li>
         </ul>
-        <h3>Elegant</h3>
+        <h3 style="color:#ffe953;">Elegant</h3>
         <ul>
           <li>Macros cannot change Nim's syntax because there is no need for it —
               the syntax is flexible enough.</li>