Uploading files - Demexis/Starbound-ColorOptionsPicker GitHub Wiki
If you successfully downloaded and launched the application, then we can start.
Let's take a look at the menu. Click "File -> Open...".
A dialog box pops up. Select the folder in which the sprites and JSON files with the types .chest, .head, .legs, .back are located. Click "Open".
If the JSON files have the correct syntactic structure and the sprites are not corrupted, then you will see a specific frame of your sprite in the main window.