Well I used a Hex Editor, and did a Hex search for 3A ( Popeye's color ) found all of them and the one alone that changes his color to white was at 00001C60 I changed that from 3A to 0E, It worked but if popeye get's killed by bluto the game crashes! Maybe if I try it with a different color other that white, and test it!
I can't get the top of the support beams to touch with the top green bar, and can't find the graphics for the houses at the top, are those graphics background graphics?