Map<String, WebElement> content = new HashMap();

    content.put("backgroundColor", WebElement a);
    content.put("fontColor", WebElement b);
    content.put("linksColor", WebElement c);
    content.put("actionBarActiveColor", WebElement d);
    content.put("activeColor", WebElement e);

public void fillDataFields(Map<String, String> data){

        data.forEach( (k,v) -> {
            content.get(k).setValue(v);
        });
    }

generalAppearanceFieldsData = new HashMap();

        generalAppearanceFieldsData.put("backgroundColor", BLUE_HEX);
        generalAppearanceFieldsData.put("fontColor", ORANGE_HEX);
        generalAppearanceFieldsData.put("linksColor", PURPLE_HEX);
        generalAppearanceFieldsData.put("actionBarColor", RED_HEX);
        generalAppearanceFieldsData.put("actionBarActiveColor", ORANGE_HEX);
        generalAppearanceFieldsData.put("activeColor", GREEN_HEX);

brandingPage.fillDataFields(generalAppearanceFieldsData);