Color palettes can be used to change the colors that are used in a Rollercoaster Tycoon map. To use a palette, unzip the ZIP file that is found on the page for a palette, and put it in your OpenRCT2/object folder. Alternatively, simply open the save file which the palette is used in. This should automatically copy the palette to your object folder! Click on a palette image below to see more info about the palette.