Transparent NSButton shown with unwanted backgroundColor

Question

So I have an NSView in which I created some borderless buttons programmatically.

Although I set their backgroundColor property to desired color, they show up like they have a darker shade.

Answer 1

I guest that is the background of Label not of Button, which does not appear when users choose to reduce transparency in System Preferences.

In that case, I have solved by this line of code:

myButton.appearance = NSAppearance(named: .aqua) 

Answer 2

here How I would do it as I mentioned in comment. The custom view is connected as iboutlet and given green color. Label has by default no back ground color. The button has no border and of type Round Rect as you see in screen shot. The blue color around button is the selection/ active control, but you can get rid of that too.

self.testBtn.focusRingType = NSFocusRingTypeNone;

edit add new image showing scroll bar:

Answer 3

//set background color

button.backgroundColor=[UIColor clearColor]

//then set tint color of button

[btn setTintColor:[UIColor clearColor]];