Identical .jpgs (85 & 90 sq. pixels) is there a reason why?

[bzpilot]

Is there a reason why there are two different sized .jpgs for many items.

It appears the buttons are actually identical other than a larger (5 pixel) black border.  Seems we could eliminate alot of these buttons if we just stick we a standard.

I'm thinking we could eliminate the duplicates of: Search, Playlist, Queue, History, Decades, Top 10 and maybe a couple others.  Since I don't see "Filter by Genre, Artist, Year" in the 90 size - I'm going to assume 85 is now the standard and the overall button size has just been cut down by deleting some black pixels on the outside of the buttons.?.

I just started working with the skins so I maybe missing something, let me know if I am.

[Barcrest]

Might save a fair bit of space by getting rid of the images that are not used.