Libre Office keeps changing font color

I keep changing font color, but on every new slide my LibreOffice keeps defaulting text to white, does anyone knows how to solve this (it’s pretty anoying)?

LibO Version: 4.2.4.2
OS: windows 8

Because you are changing directly the text color, what needs to be done for every text, you need to change it in the style, [F11] right-click the style and edit their properties.

Please take a look to the documentation:
LibreOffice_Impress_Guide

Is there an easy to set all styles to black as default?

I keep changing those damn text styles but it seems like Libre Office just ignores it.