For Linux users I can highly recommend Redshift[1]. The color temperature settings seem to differ some from f.lux but everything else works great!<p>[1] <a href="http:&#x2F;&#x2F;jonls.dk&#x2F;redshift&#x2F;" rel="nofollow">http:&#x2F;&#x2F;jonls.dk&#x2F;redshift&#x2F;</a>