documentclass{article}
usepackage{trimclip,xcolor}

newcommand{Atwo}{%
  mbox{%
    defAhalf##1{dimexpr.5width ##1 0.025emrelax}
    textcolor{red}{clipbox{0 0 {Ahalf+} 0}{A}}%
    textcolor{blue}{clipbox{{Ahalf-} 0 0 0}{A}}%
  }%
}

begin{document}
Atwo![enter image description here][1]
end{document}