question: boolean validate ( final Color color , final Composite blend ) { if ( ! validated ) { if ( ! tilesets . isEmpty ( ) ) { for ( TileSetDefinition def : tilesets ) { add ( def , color , blend ) ; } tilesets . clear ( ) ; validated = true ; return true ; } return false ; } return true ; }
target:  Try finishing the tile store withan adjustment color and blend mode for the tilesets.