New colour for the style: category

I think we should implement a specific colour for deprecated tags and style tags so that people can easily and quickly distinguish them when looking at images. I think it's important to distinguish style tags specifically for an AI purpose so that people can immediately know how to replicate an image's specific style. This has become more of a prevalant thing with the release of NovelAI V3, which does support specific styles and has been seen to replicate them very well.

You can get the colour for deprecated tags by putting this to your custom CSS:

/* Highlight deprecated tags */
a[data-is-deprecated='true'],
[data-is-deprecated='true'] a[class*='tag'],
[data-is-deprecated='true'] a.wiki-link,
[data-is-deprecated='true'] [class*='tag'] a {
color: var(--low-post-count-color) !important;
}