This massive image modification removes colour profile information and adds an alpha channel.
The first saves a little space, the second costs a little space. First is needed since SDL on OSX applies colour profile info which, while cool, is useless so long as the other theme colours are un-adjusted. Second is since we are apparently requiring full 32 bit surfaces now.
foreach(dir
Bamboo
Bath
Blox
Cake
Castle
cheese
deepspace
City
CrazyMission
EarthRise
Eyes
Freeway
Halloween
hell
Island
nature
Planes
Sheep
Snow
Underwater
Compost
)
add_subdirectory(${dir})
endforeach(dir)
install(FILES themes.cfg DESTINATION ${SHAREPATH}Data/Themes)