もしかしたら見当はずれな内容かも知れませんが…

on run
tell application "BathyScaphe"
activate
set chooseColor_Result to {choose color, choose color}
repeat with RGBList in chooseColor_Result
repeat with i in RGBList
set contents of i to i / 65535
end repeat
end repeat
set {browserTableViewColor, browserBoardListColor} to chooseColor_Result
end tell
end run