Ashley Also consider including a darker theme like the popular Monokai
<img src="http://damir.me/u/manual/monokai.jpg" border="0">
here's a quick example i put together feel free to use it...
<img src="https://dl.dropboxusercontent.com/u/14202686/harvest_dark_mono2.png" border="0">font used: Unbuntu Mono 9pt
harvest_dark_mono.xml ? download link
Using a proper coding font like Unbuntu Mono (Free!), Menlo or the Windows default Consolas would also help avoid common errors generated by similar characters that are not easly distinguished in normal sans fonts (like the Segoe currently used)
example of similar characters:
Typical Sans Font ? 1lIijJLoO0
Better Coding Font ? <font face="Courier New, Courier, mono">1lIijJLoO0</font>
Good ?? Coding Fonts Reference/Comparison