On my form for a new website, during the checkout part I found that for certain fields that are required, if they are blank and I get the error message "The fields highlighted in red are blank. Please enter the required information.", the fields are not red i.e. they look the same as the other fields. On the Overdrive template, latest bakery version. Everything is fine (from what I can tell) in bakery/frontend.css for warning and success colours.