TUniButton customized components

[N.Marzio]

I would like to customize the TUniButton to activate the Bootstrap style.
Where can I put my personalizations?
On the component creation, or is there an event to connect to?
example (beforeupdate / beforeshow ....)

Tks

[Sherzod]

beforeInit

[N.Marzio]

But I want to create my TUniButtonXX.
It's the same thing?

Tks

[N.Marzio]

I derived the TuniButton component,
and on the medoto I made the ovveride of the BeforeCompleted method.
Here I entered my code to make the button bootstrap style.

public
     constructor Create (AOwner: TComponent); override;
     BeforeLoadCompleted procedures; override;
   End;
TMXUniGuiButton.BeforeLoadCompleted procedures;
begin
   Inherited;
   //
......
end;

I hope it's a good method ...

[Sherzod]

Also you can analyze related demos: 

\FMSoft\Framework\uniGUI\Demos\Desktop\CustomControl...