Colors on BDD and IBD

Hello,

I have started recently to use Artisan Studio Uno to develop some SysML models and I have to say I am quite satisfied.
However, I have an apparently naïve question.
I would like to change the color of blocks or parts in a SysML Block Definition Diagram or Internal Block Diagram.
While this is a minor feature, the use of different colors would be extremely useful for the presentation of a big diagram.

I select the block or part of interest and then its Properties > Style, and then I select the preferred colors for background, fill, lines and text.
After that, unfortunately the new colors are not applied to the block or part.
If I try to edit the properties again, I can ascertain that the selected colors are correctly reported in the "Style" tab.
Is there something obvious I am missing?

Additionally, I would like to change the colors also in a System Architecture Diagram (in particular of subsystems), but navigating in the documentation I read somewhere that it is not possible.

Other possibly useful information:
Artisan Studio Uno 7.0.22 (Patch 7.0f applied).
Windows XP SP2.

Thanks in advance and best regards,
Marco.

I just want to confirm what I previously reported about colors in BDD and IBD.
Fortunately, colors are correctly changed instead using right-click on the block/part of interest > View Options > Style.