Greetings,
Just added a colour button to a form and when selecting the colour, it doesn't change the colour displayed on the button.
It stays white.
The button dose select and return a colour value when clicked.
You can't set the colour of the button either ie MyColorButton.Color = Color.yellow

Can someone else confirm this please ?

[System]
Gambas=3.15.90
OperatingSystem=Linux
Kernel=5.4.0-48-generic
Architecture=x86_64
Distribution=Linux Mint 20 Ulyana
Desktop=CINNAMON
Theme=qt5ctproxy
Language=en_AU.UTF-8

 new form with a new color button (QT4/5):

setting the color displayed with .color or .value works …
clicking and selecting a color works too …

 Thanks PJ,
I was using the QT4/5 component - then changed over to the qt5 and still not working.
given that it's working for you then I'd say it's a "me and my machine problem"

Thanks again for helping out.

 hmmm … like you i'm with 3.15.9 but on manjaro with xfce …

i had to roll back to 3.15.2
was getting a few layout errors on 3.15.90 on gtk.
most notably the button text not showing properly (getting cut short).
(attachment removed)

I'm waiting for the next commit when that's fixed,

Only thing i can suggest (but you probably already tried) is a ColorButton1.Refresh()

If you think you found a bug though post it to the BugTracker.