Styling has been refactored to be done entirely via CSS variables rather than via javascript.
Examples of the new CSS variables are:
#my-steps{
/* The color to fill up, left-to-right, as steps are set to active */
--progress-fill-color: #cf78d9;
/* The default color of the unfilled section of line and steps after the active step */
--progress-unfilled-color: purple;
/* The width of each step icon */
--step-width: 20px;
/* The font size of the step number and label */
--font-size: 12px;
/* The border radius of the step icon */
--step-border-radius: 25%;
/* The thickness of the line/progress bar/borders */
--line-thickness: 3px;
/* The animation speed of the progress bar filling up */
--animation-speed: 500ms;
/* Display attribute of the step labels. Show: 'inline-block', hide: 'none' */
--step-label-display: 'inline-block';
/* The vertical margin of the labels, if shown */
--step-label-spacing: 5px;
/* The font weight to use on step labels */
--step-label-font-weight: normal;
/* The font color of the step icon that is currently active */
--current-step-font-color: red;
/* The font color of the current step label */
--current-label-font-color: blue;
/* The font weight of the current step label */
--current-label-font-weight: bold;
/* The font color of step labels that are before the current step */
--previous-label-font-color: red;
/* The font color of the step icons that are before the current step */
--previous-step-font-color: pink;
/* The fill-color for step icons that are after the current active step */
--future-step-fill-color: orange;
/* The font color of step labels that are after the current step */
--future-label-font-color: green;
/* The font color of step labels that are disabled */
--disabled-label-font-color: maroon;
/* The font color of the disabled steps */
--disabled-step-font-color: red;
/* The fill-color for disabled step icons */
--disabled-step-fill-color: blue;
}For playing with these values, I've also added Knobs to the demo page so that they can be tweaked interactively.