Adding spans to WordPress titles

I want custom titles on my site (different pages have different styles depending on various factors).

To do this I simply used custom spans e.g.
<span id=”custom”>Recommendations</span> lorem ipsum

I was just woundering if this has any draw backs/ is frowned on by other developers. From my perspective it works fine. The only slight hickup is that I need to manually alter how it looks in my nav bar, but thats not really hard to resolve.

Am I missing anything?