That means two things: you need extra utitilies to have different reds or, you don't mind to adjust the same red that will impact in the rest of the website. As

That means two things: you need extra utitilies to have different reds or, you don't mind to adjust the same red that will impact in the rest of the website. As a designer I do this all the time. If my design is complex to the point I would need several reds, then i would use a different value in the class name, like numbers or other options. Then my workflow for that case would be: create the new color value, compile the CSS, change the class name in those places where I want to use the new red.