Help with TextWrangler GREP?

Hi there, I'm using a text file imported from InDesign into TextWrangler to edit a large amount of copy for work. I was just wondering if there is any way to find and replace every first letter after a bullet point with a lowercase letter?

For instance, I have

• Shiny pants
• Lovely pants
• Brown pants

and would like it to be like

• shiny pants
• lovely pants
• brown pants

for every instance where capital letters follow a bullet point. I'm assuming I'd use the Find and Replace function with GREP to do this, but I can't really wrap my head around it. Could anyone help me or point me in the right direction?