[Feature Request] Add options to use class colors for fonts and bars and a couple of extras...

Long and short, title. The customization of the addon is phenomenal! But, changing the color, texture, and font of every option is a bit long, especially if we're trying to style the addon for multiple toons. Recommendation: Add a function to apply group wide settings, instead of a per bar. Function would grey out/inactivate the subsequent settings. I.e. A single toggle for bar texture, allowing a selection and making per bar dropdowns inactive. Same idea for class colors for bars and fonts, but have it look for custom_class_colors first, with blizzards raid_class_colors as a fallback. Same idea for fonts.