Chagning product text color in Woocommerce

Hi
Love yuor theme!
Problem I have (using Dark theme) is that on Woocommerce product pages the description text is #333333 on a dark backgorund which doesn’t show up.
I have searched high and low for which css file to edit but can’t find it.
I could chnage every page using the page editor but that is a long job.
I also need to alter backgound and text colors for some of the tables
Any suggestions please?
(see http://nobirdshere.com/shop/bird_spikes/wide-steel-bird-spikes-bulk-packs/)