Add water opacity to theme - defaulting to 50% opaque on all themes but Eyes (80%) and Underwater (100%)
install(FILES
anchor.png
Border.png
Flake.png
horizont.png
icon.png
LandTex.png
plant1.png
plant2.png
plant3.png
plant4.png
Sky.png
theme.cfg
DESTINATION ${SHAREPATH}Data/Themes/Island)