Ok sorry about that , I should have found the info myself.
For the moment, as .19 is not easily available for newbies I found a quite nice solution by using the others addons (glass, icon set) and using a dark style sheet.

Best, and thank you for your answer

Send your freecad info Here it is : OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.4 (GitTag) Build type: Release Branch: releases/FreeCAD-0-18 Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8 Python version: 3.6.6 Qt version: 5.6.2 Coin version: 4.0.0a OCC version:...

by pablogil » Sun May 26, 2019 11:35 pm easyw-fc wrote: ↑ Sun May 26, 2019 9:57 pm triplus wrote: ↑ Sun May 26, 2019 9:46 pm ping there is also a small issue with dark themes (i.e. Dark-blue) theme-issue.png Could you describe the issue? I cannot see it... the darker background color is correct, wh...

Same problem here on PC, cannot have the addon installed. When trying to install the progress bar will keep moving but nothing happens, and when stopping and restarting, nothing changes, but FreeCAD addon managers say that the Moder UI addon is installed. Do you have an idea why this is happening? B...