Highlight feeds with colors

Would be great to add and option like the training option that filter feeds,but a training option that just highlight the word in the title of the article,would be great if this options has a lot of different colors or even someway to input the color rgb code for example and save all the rgb color that you want ,then when you use the training option you can select the word in the article title and select which color will be used to highlight that word in the next feed update.