Implementing the color scheme

We've been provided with a business-friendly palette of blue, red, and gray. Let's work these colors into our color variables:

1. Open scss/includes_variables.scss in your editor. We'll be working at the beginning of the file, in the color variables.

2. Let's review the range of grays we have available. If you've begun with the chapter5/finish files, you'll see we've carried these variables over from Chapter 5, Bootstrappin' Your Portfolio. They served us well there, and we'll make use of them again here:

            x` 
            // ------------------------- 
    
            @gray-darker:            #222; // edited 
            @gray-dark:              #454545; // edited 
            @gray:                   #777; // edited 
            @gray-light:             #aeaeae; // edited 
            @gray-lighter:           #ccc; // edited 
            @gray-lightest:          #ededed; // edited 
            @off-white:              #fafafa; // edited 
   ...