How To Set a FMX.Panel Color?

Question

FMX controls do not have a color property. What is the FMX equivalent to VCL.TColor?

FMX.Panel1.Color := clBlack

Solution

Quoting myself: in a nutshell, use a TRectangle instead of a TPanel (a panel's style is probably composed of a TRectangle anyway):

1. Add a TRectangle to the form.
2. Change Stroke.Color to Gray.
3. Change Fill.Color to whatever you want.
4. At runtime, change the colour with code like this:

MyRectangle.Fill.Color := TAlphaColors.Blue;

Annoyingly, at designtime, a TRectangle is made to pretend it can’t parent other controls (in reality, any FMX control can parent any other). However, you can use the Structure pane top left of the IDE to reparent controls to it as you wish.