Type Score: Breaks if no scoreBarEndColor is set by the user

If field_score_bar_end_color is empty (optional field), the color transition script throws an error (""progressbar.js" can't access property "forEach", g is null".

So we need to ensure this thing has a fallback value, maybe:

to: {
              color: scoreBarEndColor.length ? scoreBarEndColor : scoreBarColor,
              width: scoreStrokeWidth
            },