Color Error when the inputs are partly `int`

**Describe the bug**
As titled.

**To Reproduce**
```python
from compas.colors import Color

color = Color(0.0,0.0,0)

print(Color.coerce(color))
```

```bash
 File "\compas\src\compas\colors\color.py", line 585, in coerce
    raise ColorError
 compas.colors.color.ColorError
```
