\documentclass[a4paper,12pt]{article}
\usepackage[usenames]{color}

\begin{document}
\pagecolor{black} % Background color

\color{white}     % Text color
\definecolor{Cq}{rgb}{1,.2,.2}
\definecolor{CB}{rgb}{.1,.1,.8}
\definecolor{Cv}{rgb}{.1,.7,.7}
\definecolor{CR}{rgb}{.7,.1,.7}
\definecolor{CF}{rgb}{.7,.0,.0}


\center

${\color{CF}\vec F} ={ {\color{Cq}q} {\color{Cv}\vec v} \times {\color{CB}\vec B}  } $
 
$ $

${\color{CR}R} = {{m {\color{Cv} v_\perp}}\over{ {\color{Cq}q}  {\color{CB}  B}  } }$

$ $

${\omega} =  {{ {\color{Cq}q}  {\color{CB}  B}  }\over m }$



\end{document}
