Batch create colour classes

colours.scss

//map global variables with front end class names
$globals: (
	"text"		: $text-color, 
	"bg"		: $bg-color, 
	"pg"		: $pg-color, 
	"primary"	: $primary-color, 
	"secondary"	: $secondary-color,
	"tertiary"	: $tertiary-color);

// for each vairable 
@each $name, $color in $globals  {
	// ignore if transparent
	@if $color != transparent {
		// set up incriments
		@each $qty in 05,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90 {
			// output classes specifying text colour
			.#{$name}-color-tint-#{$qty}  { color: tint ($color, $qty); }
			.#{$name}-color-shade-#{$qty} { color: shade($color, $qty); }
		}
	}
}