Circular progress bar transparent background

[Iaggoq]

Is your feature request related to a problem? Please describe.

Circular progress bar doesnt have a transparent background

Describe the solution you'd like

A Circular progress bar with a transparent background

Describe alternatives you've considered

using transparentbackground = true but it didnt work

Devices

Add a list of the platforms you want this feature to be implemented and on which version of TotalCross.

• Device: Raspberry, Android
• TotalCross Version 6.1.1

Additional context

ps: in the simulator when the animation is getting close to max value the progress get a little broken but this is only a simulator problem.