slapshot67 found an easy way to find the color palette.
1. load up the game with gens.
2. on the main screen (lecavalier) go file, quick save, the file will be a .gs0 file. it will be in you gens folder.
3. find the lecavalier image in tile molester.
4 click palette, import from, another file.
5 load the .gs0 file and it should be the original color.
6 you then can import the image you want.
I dont know if it is the right way but it works