I am using the Free version of Interface theme. I have successfully installed the child them for the same. I would need some support in changing the font colour from grey to While and also wanted to change the font size 14 or 15 to 13.
Could you please advise me the easiest way of adding the codes on the child theme or just on the CSS setting.
To change the color and the font-size paste below CSS code in your child theme CSS. Also if you want more features like font-family, font-size and font-color, color skin you can upgrade it to pro version of the Interface theme and change as you wish.
.info-bar,
.info-bar .info ul li a {
color: #fff;
font-size: 14px;
}