Color coded stars don't work for everyone
That point hit home a few weeks ago when I had to draw a diagram of the Network Jack COLOR layouts for a co-worker on a project because he was color blind and unlike traffic lights, there was not a National Standard for position.
Males can be Red or Green color blind, but it does affect a very small percentage females.
As we age, sensitivity can decrease
, making it harder to distinguish the color shades.
The 'gold star' used in the Catalog and 'Jacket' are just (rating.png) PNG icons in the 'resources' folder. 'Have at it', for your own use.
Coding other places to use a color code is a huge amount of work, that would exclude a number of users.