Add these files to your "Artwork" folder to add overlay support for 
Hyperchase, Minestorm II, Mr. Boston Clean Sweep, and Spectrum Color
Test. 

To start Spectrum, type "mess raaspec" at the command lineor choose
"spectrum.bin" with your MESS frontend. Don't forget to add 
"spectrum.bin" and "system.img" to your "raaspec" folder...

"spectrum.bin" and "system.img" are available in any good Vectrex 
binary archive or at http://vectrex.vintagegaming.com on the MESS page.