QComboBox text colour won't change with style sheet

Question

I'm trying to style a combobox in QT5. I'm using QT Creator for the layout and loading an app-wide style sheet at start up.

The css I have related to my combobox is as follows:

QComboBox
{
    color:white;
    background-color: qlineargradient(x1:0, y1:0, x2:1,y2:1, stop: 1 rgba(228, 41, 81, 100), stop: 0 rgba(234, 107, 101, 100));
    border-color: rgba(255,255,255,200);
    border-width: 1px;
    border-style: solid;
}

QComboBox QListView
{
    border-style: none;
    background-color: qlineargradient(x1:0, y1:0, x2:1,y2:0, stop: 1 rgba(228, 41, 81, 100), stop: 0 rgba(234, 107, 101, 100));
}

QComboBox::drop-down
{
    width: 20px;
    border: 1px;
    border-color:white;
    border-left-style:solid;
    border-top-style: none;
    border-bottom-style: none;
    border-right-style: none;
}

QComboBox::down-arrow
{
    image: url(:/ArrowImages/images/whitearrowdown16.png);
    width: 16px;
    height: 16px;
}

But the text colour in the combo box remainds as the default (black) colour. The colour in the drop down is white. The border colour and styling all work correctly. Is the label on the combobox some sort of sub-control I need to style separately? Or am I missing something else?

Thanks.

Edit:

Added screenshots for clarity

Edit 2: It looks like this only occurs when the combobox is set to not be editable (which is the correct behaviour for my program, so doesn't really help me.) When the combobox is set to editable, it obeys styles correctly. I've tried adding

QCombobox:!editable
{
    color:white;
}

but it doesn't fix the problem.

Answer 1

Only just resolved this. It seems setting the padding property (with any value) on the combobox in the style sheet makes it properly obey the colour styling. I'm assuming it's down to some sort of bug that might only arise on certain set ups, but if anyone else is having the same problem, the following code would work (when compared with that in the original question):

QComboBox
{
    color:white;
    background-color: qlineargradient(x1:0, y1:0, x2:1,y2:1, stop: 1 rgba(228, 41, 81, 100), stop: 0 rgba(234, 107, 101, 100));
    border-color: rgba(255,255,255,200);
    border-width: 1px;
    border-style: solid;
    padding: 1px 0px 1px 3px; /*This makes text colour work*/
}