[Lazarus] Options dialog filter

[Felipe Monteiro de Carvalho]

> It may be related to themes as Paul Ishenin mentioned, but I have seen colors used in other GUIs.

Probably those GUIs are custom-drawn, but you are using native widgets
in your GUI.

If you want unrestricted colouring options you can use TCDCheckBox and
friends from our custom drawn controls units in the LCL:

http://wiki.lazarus.freepascal.org/Lazarus_Custom_Drawn_Controls

But it should be used with care since it might look different then the
other nearby controls.

-- 
Felipe Monteiro de Carvalho