[Lazarus] TColor and Alpha channel support

[Mattias Gaertner]

On Mon, 26 Sep 2016 14:25:14 +0200
Ondrej Pokorny via Lazarus <lazarus at lists.lazarus-ide.org> wrote:

>[...]
> In this case maybe this property pair would be more appropriate (?):
> 
> Color := ...;
> Alpha := ...; // property Alpha: Byte

A property "Alpha" sounds like setting the alpha of the whole control.

Also FPColor contains 16bit channels.

Mattias