Currently i just upgrade to magento 1.9.1 and using the guide from
http://www.magentocommerce.com/knowledge-base/entry/ee1141-ce191-configurable-swatches
i have upload 2 png file namely Black and White to [your Magento install dir]/media/wysiwyg/swatches.
But under my webpage, it is still showing me a dropdown box instead of swatches? Is it because of the theme that i use which is not compatible to magento 1.9.1 swatches ?
Under my configurable products, the image i have also label to White and Black. What can be wrong.
Many Thanks