I can create an Avengers GS40 set to your requirements from the three components:
the box, characters and umbrellas - really excellent reproductions
Steed’s Bentley which can be red or green with red, silver or, very rarely, gold wheels
Mrs Peel’s Lotus which was always white in the set but I do also offer an alternative silver blue version which she used from Series 2 on.
There is one set already made up and priced (see the GS40 link to the right) but if you would like to make your own choose the Bentley and Lotus you like, buy these and the box. The total price will range from £100 to £180, the difference being due to the condition of the cars.