Mac: QPushButton styleSheet color not applied to the dropdown menu icon color

This issue is about the QPushButton dropdown menu icon color not changing for Mac.

We expect that the QPushButton `color` that we set should also be applied to the dropdown menu icon color – which is the behavior for Linux and Windows but NOT in Mac.

Note: The QPushButton dropdown menu icon default color is black that's why it's not visible when we set the QPushButton background-color to black.

Code snippet:

QPushButton {\
    text-align: left;\
    padding: 0 2px 0 2px;\
    margin: 0;\
    background-color: rgba(%1,%2,%3,%4);\
    font-size: %5px;\
    font-family: %6;\
    color: rgba(%7,%8,%9,%10);\
    border: 1px solid rgba(%11,%12,%13,%14);\
}\