Adronia 

Togs is tired of the grayed out star, as it feels anti-accessibility for him, so he modified the css on his side! It is a bit burnt solution but work fine for him!

/*Toot icon*/
path[d="M7 22L3 18L7 14L8.4 15.45L6.85 17H17V13H19V19H6.85L8.4 20.55L7 22ZM5 11V5H17.15L15.6 3.45L17 2L21 6L17 10L15.6 8.55L17.15 7H7V11H5Z"] {
fill:#8c8dff;
}

path[d="M9 9H15V15H9V9Z"]{
fill:#8c8dff;
}

/*Favorite icon*/
path[d="m233-120 65-281L80-590l288-25 112-265 112 265 288 25-218 189 65 281-247-149-247 149Z"]{
fill:#ca8f04;
}

/*Bookmark icon*/
path[d="M200-120v-640q0-33 23.5-56.5T280-840h400q33 0 56.5 23.5T760-760v640L480-240 200-120Z"]{
fill:#ff5050;
}

Nov 6 at 5:39pmWeb
Show threadAdronia Nov 6
I hope it is enough of a proof this works on my side. I just took two random posts from my feed, it is nothing personal, really. It seems masto uses svgs for icons now, so using color attribute in css won't do much
Show threadAdronia Nov 6
Small edit!
Added in the same thing for toots and bookmarks. Sadly toot has to be 2 svgs
Show threadLeoBurrNov 7
@adronia FYI - I fixed this in CSS on the server side....along with other color enhancements to make the site prettier and easier to use for some folks. ;)
Show threadLukyanNov 6

@adronia Is the grayed out star a 4.5.0 feature or an instance theming issue?

(I need the colors, also to quickly scan the timeline for red in a specific column when switching between a phone app and the Web UI.)

Show threadAdronia Nov 6

@lukyan Frankly, I am unsure which one it is. I am more biased towards the mastodon "feature". The theming on tiggi.es is still there but icons are svgs now (if they were not)

Also tried to get this to work with color attribute but it did not do much :(

Show threadLukyanNov 6

@adronia You could probably use .icon-button.star-icon.active and similar to override color, unless there is something custom on your instance.

(This made me look at the about page of tiggi.es, it's a cool instance.)

Show threadAdronia Nov 6
@lukyan It is written as such in tiggi.es style. It did not override the color, despite closing them in
Show threadLukyanNov 6
@adronia If I had this on a site I use, I'd check the Firefox developer tools if there are other rules overriding the color for the element that should have the icon.
Show threadAdronia Nov 6
@lukyan Well, there are no such rules on my end. Everything what has worked so far is using the fill attribute on specific svg path as those change while clicking on them, to color them in