We need a good code font for the function signatures on dlang.org

[Suliman via Digitalmars-d]

On Wednesday, 16 December 2015 at 21:05:27 UTC, Andrei 
Alexandrescu wrote:
> I was looking at 
> https://github.com/D-Programming-Language/dlang.org/pull/1169 
> and that bold sans serif proportional text for the code is 
> just... well let's say it's time to replace it.
>
> What would be a good code font to use for those?
>
>
> Thanks,
>
> Andrei

Is it's possible to colourize  content like in, out, optional 
parameters etc?