Black icons with alpha remain black
## About this issue

After upgrading from `3.1.0` to `3.2.2`, black icons with alpha remain completly black.
I reproduced this in the sample (On Android 9.0), when changing this line:

https://github.com/mikepenz/Android-Iconics/blob/29e13749350d6a44050ceedcebfdb8199fa67ca2/app/src/main/java/com/mikepenz/iconics/sample/item/IconItem.java#L52

to:

```java
holder.image.getIcon().color(Color.parseColor("#77000000"));
```

| `3.1.0` | `3.2.2` |
| ------- | ------- |
| ![3 1 0](https://user-images.githubusercontent.com/8021265/54859505-42605080-4d0e-11e9-9e70-541ec73f8ff1.png) | ![3 2 2](https://user-images.githubusercontent.com/8021265/54859507-468c6e00-4d0e-11e9-9d0d-013aba706cb3.png)

I also quickly checked the latest alpha and were able to produce similar results.

## Details

- Used library version: `3.2.2`
- Used support library version: `appcompat 1.0.2`
- Used gradle build tools version: `3.3.2`
- Used tooling / Android Studio version: `3.5 Canary 7`

## Checklist

- [x] Searched for [similar issues](https://github.com/mikepenz/Android-Iconics/issues)
- [x] Checked out the [sample application](https://github.com/mikepenz/Android-Iconics/tree/develop/app)
- [x] Read the [README](https://github.com/mikepenz/Android-Iconics/blob/develop/README.md)
- [x] Checked out the [CHANGELOG](https://github.com/mikepenz/Android-Iconics/releases)
- [x] Read the [FAQ](https://github.com/mikepenz/Android-Iconics/blob/develop/FAQ.md)
- [x] Checked out the [MIGRATION GUIDE](https://github.com/mikepenz/Android-Iconics/blob/develop/MIGRATION.md)
