AM & Ty,
We have had good success with using MS Paint to edit decal size and colors. I posted Brotherhood of the Ring file and PAMPA logo file that have been printed out on waterslide decal paper (I get mine from Michael's 6x8 size) others have used vinyl printable sheets both work great with inkjet color printers.
Ty - please post the Midwest logo file so it is available.
Best, DennisT