Can anyone tell me if the batteries and attys from different producers usually match color? For example, is the pink from Joye the same as from Riva, how about other colors. Currently, I have two rivas one pink and one titanium but wondered if I mix & match attys and batteries with those of another producer if the colors will match? Many of the sites don't list the brand of the spare parts. Of course with the rivas I can use the cone to hide the atty but if I use a riva atty with a Joye battery I don't want it to look two toned. I have two pairs of shoes the same style but one pair black and the other brown. I went to a trade show and realized the first day that I had taken one brown shoe and one black. Don't want the two tone look on the pv. LOL Although.. pink and black might look good.