I recently bought some highlighters from Japan that are pastel in color and on the front it says 「やさしい色のソフトカラー」 and I'm a bit confused since 「やさしい色」and 「ソフトカラー」both, in my mind, mean "pastels" so I don't understand what the の connecting the two means since they're both the same concepts.
What would be a good translation?