Getting color throws an error if no grade is specified

[diego-codes]

The documentation states that we can retrieve a core color by not supplying a grade like this:

.foo {
  color: color('blue');
}

However, I get this error on all colors except for white:

Message:
    node_modules/ibm-design-colors/_ibm-colors.scss
Error: argument `$color` of `rgba($color, $alpha)` must be a color

       Backtrace:
       	node_modules/ibm-design-colors/_ibm-colors.scss:52, in function `rgba`
       	node_modules/ibm-design-colors/_ibm-colors.scss:52, in function `color`
       	dashboard/src/styles/scss/_modal.scss:8
        on line 52 of node_modules/ibm-design-colors/_ibm-colors.scss
>>     @return rgba($grd, $alpha);
   ------------^

[diego-codes]

By the way, it was hard to figure out what the bug was. I had to go into the source code of the .scss file and had to check what $grd value was throwing an error. To figure out where I was using the color function in a way that would throw an error, I had to add:

@if type-of($grd) != color {
  @debug &;
 }

An error to help trace back the problem would have been really helpful in this scenario.