Janel, If you have a copy of The Orignal MGB, the first few pages have some interesting colors. The very first page shows a GT in Mirage. I'm not so sure how it woud look with red top & interior, grey might look good.Then on page 8, there is a Sandy Beige that would look good with red. On page 11, there is a Bronze Yellow one the POPS! Although I'm not sure what color for an interior, maybe a tan. On page 12, there is a Black Tulip and the Mirage GT. The Black Tulip originally came with a puke yellow interior but, a roadster would look good with grey top & interior.
Just some thoughts. If you don't have the book, I'll loan it to Chuck tonight.
John