I'm currently fiddling with the Localized.rsrc file... I'm baffled as to why it's handled so differently from the rest of the system, but that's besides the point. I'm building into the Localized.rsrc file from Watercolour and I'm a little confused as to why the masks are 75 pixels wide while the color resources are 76 (using the view mode tri-button as an example)... also, there doesn't seem to be any alpha information - are these resources 'solid', utilizing a 1-bit mask for the clickable region, or does that 1-bit mask affect transparency as well? I'm noticing the individual color resource elements are also surrounded by white - is this necessary? If somebody could shed some light on this .rsrc file for me I'd be eternally grateful. I find Desktopper's info on this hard to get through.

Thanks!