One of our testers picked up that Gmail (WIndows desktop) ignored (or overrode) a text color style which is set in the template in the <head> tags but should have been imported inline. So we added the style inline and reimported the template but the issue remains. Source code shows the inline css correctly........another Gmail quirk?
Does this ring a bell to anyone?
Was it on an anchor tag? Gmail changes #FFFFFF and #000000. Try using #FFFFFE and #000001 as a workaround.