No that should work actually. The code is already present in your css, what you would need to do is add that code above and change the color. If you’ve uploaded that code above and didn’t change the color then it will still look the same (blue), which means you just need to change it to a different color. You can use a color picker to get the exact color hex code that you need. Does that make sense?
Try this one – http://www.colorpicker.com/