Hello
You must use TRANSPARENCY and HOTTRANSPARENCY (all reserved words may be found in sSkinProps.pas)
Also I must say that empty item exists already in all skins. 'CHECKBOX' section will be empty and transparent always and you can use this section.
Tried following:
SkinManager.CommonSections.Add('[EMPTYITEM]');
SkinManager.CommonSections.Add('TRANSPARENCY = 50');
SkinManager.CommonSections.Add('HOTTRANSPARENCY = 50');
sPanel1.SkinData.SkinSection := 'EMPTYITEM';
Nothing helped.
Do you have sample of working code?