Product Block Button Is Suddenly White

Hello All, 

When I logged in yesterday, I noticed the purchase button on the linked button was white. When you rollover it, it turns all white. I have searched high and low in styles and can find nothing that would cause this issue. I use SquareKicker but Im not seeing a button option, so it can't be from them unless I'm missing something. If I reset to default it cause hours of work on the site. Any ideas? Is there an on page CSS solution? Can I even do CSS (which I don't know) on page? Ive been working very hard on all of this so I'm feeling a bit overwhelmed. 

Thanks for your help. It is appreciated,
Bob

Hey @tuanphan, the good folks at Squarekicker helped me get it sorted but thank you. I hope you are well. 🙂