title: use the name of the classes to give a specific color using mixin in scss
body: <p>I'm starting to practice with sass and I want to set any color with the percentage of red, green and blue in the class. So, the class name <code>color-50-10-60</code> means 50% red, 10% green and 60% blue, the numbers can only vary in quantities of 10 in 10, so there can only be numbers like 10, 20, 30, 40... up to 100, if I change the numbers that have the name of the class must change color, I know that I must use mixin to get it but I just do not understand how to do to achieve the goal. Any help?</p>