Qttitude is a free open source Qt style sheets creator for Linux and Windows. Using this you can create stylesheets for Qt based applications and test it for your app’s user interface. You can import your Qt applications User interface files (that is *.ui files) in this Qttitude application. Then start style your style sheet view the visual changes in real time. It supports named variables, snippets and export as text file. You can divide your style sheets across multiple pages, reorder and turned on or off particular page for testing. It comes with color schemes creator tool to create colors.
Install Qttitude Qt style sheet creator on Ubuntu:
You can easily install Qttitude Qt style sheet creator via portable installer on Ubuntu. Go to the below Qttitude Qt style sheet creator download link. And download Qttitude for the Ubuntu version from the download link.
The downloaded file is in zip format and around 6MP in size. Then right click on it and select extract here. Then right click on the Qttitude program file inside the linux folder and select run to start Qttitude Qt style sheet creator application on Ubuntu.
This app is still in initial stage of development but it looks promising.