Appling Color transformation in a QDeclarativeView

  • Hello,
    I am developping a application based on QDelarativeViews which are displaying QML. I am using QT 4.8.4 and QTQuick 1.1
    2 years project already and switching to QT 5.xis not really an option.

    I need to apply a color transformtion globally in a QDeclarativeView.
    This is to simulate the low ambient light level vut the item representing lights, LED and bright stuff must stay bright.
    Ideally a Gamma curve should do the work (dark become darker, bright become brighter).

    I looked for something like this but cannot find it.
    Is the a color transformation feature ? or a something alike?

    Thancks a lot for the support

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