Hover Color Stops Working for Green Stars

## I'm submitting a...

[X] Bug report  

[ ] Feature request

## Current behavior

When more than 6 stars are selected the fill stops working for the green stars

## Expected behavior

Hover fill keeps working

## Minimal reproduction of the problem with instructions

Add the following config:

Or go to https://biophoton.github.io/angular-star-rating/#/property-bindings and change amount of stars to 10

## Environment

"angular-star-rating": "^4.0.0-beta.3"

"css-star-rating": "^1.2.4"

Angular version: 5


Browser:

- [X] Chrome (desktop) version 72