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I am running ubuntu 11.04. This is what my progress bars look like: I am showing the progress bars in a batch processing window (one per batch item) and would like to use them as a status indicator (green while all is going well, red in case of errors, ...). I have tried several suggestions, including the ones made to this almost identical question. Unfortunately, I couldn't make it work and the documentation on customizing QProgressBars doesn't help me either, so I would be very grateful for any suggestions as to what I'm doing wrong. I have subclassed the QProgressBar as suggested and have tried using stylesheets as well as the palette (not at the same time but as alternatives). With stylesheets, I can't make it look anything like the regular progress bars. Changing the color is really all I want to do, so I figured it should be much easier to do that by use of a palette instead of a stylesheet, but with the palette nothing happens at all. Here is one of the versions I've tried for the palette: #include "myprogressbar.h" #include <QtGui/QPalette> MyProgressBar::MyProgressBar(QWidget *parent) : QProgressBar(parent) {} void MyProgressBar::onProgress(int value, int maximum, QString phase) { setMaximum(maximum); setValue(value); setFormat(phase); QPalette p = this->palette(); p.setColor(QPalette::Highlight, QColor(Qt::green)); this->setPalette(p); } ... I also tried the version suggested here , but that didn't help either.

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