I know you didn't ask us to help you look, but here are some possibilities anyway;-)
Red croco
http://www.bluefly.com/Fashion.....-300823303
http://www.standardstyle.com/P.....goryId=892
http://www.kennethcole.com/pro.....age=family
Silver metallic
http://www.anntaylor.com/catal.....001#ATLtop
http://www1.bloomingdales.com/.....q8olOmA5_w
http://www.bluefly.com/B-low-T.....-300978001
http://www.bluefly.com/Calvin-.....-300890802
http://www.bluefly.com/Calvin-.....-214366900
http://www.martinandosa.com/we.....=2110_9884
http://www.jcrew.com/AST/Brows.....iUZxYbq6Cw
Calfhair zebra
http://www.anntaylor.com/catal.....;cid=A0001
http://www.kohls.com/kohlsStor.....-_-Primary
http://www.standardstyle.com/P.....goryId=892
(not calfhair)
I'm not having much luck with the patent mustard I'm afraid
http://www.jcrew.com/AST/Brows.....3IZ0Ehxr2A
http://www.gap.com/browse/prod.....ID=2178999
http://www.urbanoutfitters.com.....-_-Primary
(in yellow)
Just in case you need a purple one too:-)
http://www1.bloomingdales.com/.....AXXsx1L6Vg