Using system colors automatically

[SeeLook]

Hi,
So far, the only way to keep written application in accordance with system colors (color scheme) was to add color property for every Text, Label, etc. items - it is bearable.
In the same moment, buttons of Dialog respect system colors without any additional efforts, but Button control not yet - it has hard-coded background and text colors.
The "worst" case is with CheckBox-es - to keep them in colors, the only way I found is to reimplement its style.

Did I miss something how to do this in single place.
In contrary QtWidgets respect system color scheme out of a box.

[nestorac]

They should all respect system colours.