Does this happen in all copies of Chrome or just the one on your computer? Almost all browsers have a setting for "always use my colors" (wording variable). Except, apparently, Chrome, which only offers "themes".
How is the color identified in the CSS? The format rocknbil gave (# followed by six hexademicals) should work in all browsers, as should the shorter three-hexadecimal form. There are a few other recognized numerical formats. Named colors are tricky because not all of them are universal. A non-official color name won't validate, even if most browsers recognize it, so check that first.
The official list of Named Colors is here [w3.org]. Ouch, that's shorter than I thought. And the "lime" is lime-er than my eyes care to look at.