Inside Clone Hero_Data , open:
This is the single best source. The #resources or #game-themes channels have pinned messages containing texture packs, including transparent highways. Look for files named highway_transparent.png or Clean Highway Texture . Clone Hero Transparent Highway Download
In standard Clone Hero, the "highway" refers to the vertical track that notes travel down toward the strike line. By default, this highway has an opaque or semi-opaque background designed to make the notes stand out. Inside Clone Hero_Data , open: This is the