Same colors for color and background-color in two contexts #sliding_cart and .ui-datepicker-links
I get around 200 of these warnings or similar using the w3c CSS validator. I was just wondering why, when I'm pretty sure the elements don't cross over each other i.e the text is not being hidden from users. I thought thats what Google et al crapped their pants about.

Should I be concerned about these warnings and try to fix them? Both for CSS and Google SEO reasons.