Rework icon coloring

[Weilbyte]

Currently, icon recoloring is handled in a bad way. Many icons are styled white on their own, while a simple color: white to their shared parent class would do the exact same.

In short: remove useless styles, recolor parent and have children inherit color, clean mess.

[ianalexis]

Don’t know if it is the correct place to upload this but I’m trying to make a black fork so I remaster and remake some icon files.
If this helps you please use it and if you need something else please make me know.

Edit: confirmed it’s the wrong place to upload this but... XD