Created attachment 135289 [details] My theme SUMMARY I'd really prefer to have separate groups of keys separated by color way easier than the current approach. There should be a predefined way to theme KCalc. My personal preference is the old style calculator, since it is simply more intuitive and easier to navigate through those keys: https://i.imgur.com/y43E8jj.png STEPS TO REPRODUCE 1. Settings > Configure KCalc 2. Colors 3. Mess around with RGB for each type of element OBSERVED RESULT No preview, no clue what a certain change would change within the final result. EXPECTED RESULT I would expect this way of setting colors to exist as an Advanced theming, but a simple selection of predefined 3-5 default themes is truly missing (to avoid doing this every time I install KCalc on a different machine). SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.4.89-1-MANJARO KDE Plasma Version: 5.20.5 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION The colors used in my theme are: Display colors Foreground: #242424 Background: #ffffff Button colors (Background, Foreground) Functions: #999999, #f2f2f2 Statistic functions: #999999, #f2f2f2 Hexadecimals: #ffffff, #242424 Numbers: #ffffff, #242424 Memory: #eca43e, #333333 Operations: #d4d4d2, #242424