Categories colors doesn't load on first time

Hi,

I noticed sometimes categories colors doesn’t load corret on my website. When website is loaded first time (cleared browser cache) I see all categories in blue (default color)
see pic 1: http://s17.postimg.org/q2tfua9sv/1_load.jpg

When I hit refresh (F5), colors loads correct
see pic 2: http://s12.postimg.org/c7idkh37x/2_load.jpg

Website: http://goo.gl/1qfCwD

I think its some kind of css issue. Have you any idea what’s going on here?