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.

0 0 0
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$54 $5C $9D
$34 $3C $7D $80
city.ogg
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Rock
65 258 175 2 1 0 0 240 215
RockShort
0 165 163 2 1 0 0 163 140
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20
1 0 20 0