Text style icons hard to see with light color scheme

Hi!

I just found out about your project Karbonized and I think it is fantastic! It's great for creating quick mock-ups, social posts or presentations and it feels really slick and easy to use. Thanks for creating it!

I also noticed a small UI bug. When using the light color scheme the icons for Text styles are barely visible. It's a small detail, but I thought I'd report it anyway. :)