Hi @L_Gallup, welcome to the community, and I hope you don’t mind me moving your topic to this existing thread for the font customization request. Text color customization is not currently supported, at least not in the direct way, but the text customization (or style system) is in our hit list. So the provided use case is very helpful and appreciated!
While you are exploring things in SharpTools.io you might have noticed that we have put a lot of efforts in keeping things “simply, but powerful”, and try to provide great customization options without making it overwhelming. 
That being said, there is still a way to customize the text color if you use Fully Kiosk Browser on an Android/Fire tablet. See the post below that Josh has shared some tips to customize the text style through Fully’s Javascript injection feature.