Sstrhsrtj

So I have created the following:

documentclass[17pt]{extarticle}

usepackage{extsizes}

usepackage{lipsum}

usepackage{xcolor}

usepackage{fancyhdr}

usepackage{fontspec}

usepackage{tikz}



% To set the font and formatting:



setmainfont{[lcars.ttf]} %To load the font named lcars

%setmainfont[AutoFakeBold=1.5, AutoFakeSlant=0.4]{lcars.ttf} % To set bold or italics if I wanted to.



% LCARS Colours begin:



% Sources for colours:

% http://lcarsmania.com/designguide/Okudagrams_Color.png 

% http://www.lcarscom.net/lcars_colors.gif 



definecolor{LCARSBG}{HTML}{000000} % Pure black

definecolor{LCARSTCMain}{HTML}{FF9900} %Dark yellow

definecolor{LCARSTC1}{HTML}{CC99CC} % Light purple

definecolor{LCARSTC2}{HTML}{9999CC} % Light blue

definecolor{LCARSTC3}{HTML}{CC6666} % Light red 

definecolor{LCARSTC4}{HTML}{FFCC99} % Light peach 

definecolor{LCARSTC5}{HTML}{9999FF} % Light blue, a different variant

definecolor{LCARSTC6}{HTML}{FF9966} % Light orange

definecolor{LCARSTC7}{HTML}{CC6699} % Pink

definecolor{LCARSTC8}{HTML}{F5173C} % Light red 

% LCARS Colours end.



% To set page numbers to the right colour and style.



makeatletter

fancypagestyle{mypagestyle}{%

  fancyhf{}% Clear header/footer

  fancyfoot[C]{textcolor{LCARSTCMain}{thepage}}% Page # in middle/centre of footer

  renewcommand{footrulewidth}{0pt}% No footer rule

  deffootrule{{if@fancyplainletfootrulewidthplainfootrulewidthfi

    vskip-footruleskipvskip-footrulewidth

    hrule@widthheadwidth@heightfootrulewidthvskipfootruleskip}}

}

makeatother

pagestyle{mypagestyle}



begin{document}

begin{flushleft}



pagecolor{LCARSBG} % Page background colour.

color{LCARSTCMain} % Main body text colour.



section*{textcolor{LCARSTC5}{Section Title:}}



textcolor{LCARSTC8}{A question or subheading here?}newline



textcolor{LCARSTC6}{Another sub heading:}newline



lipsum[1]

begin{tikzpicture}

draw[rounded corners] (0, 0) rectangle (4, 1) {};

end{tikzpicture}



end{flushleft}



end{document}

However I want to do the actual shapes I believe tikz package is best for this?

Looking at : http://www.lcars-terminal.de/tutorial/guideline.htm

and especially http://www.lcars-terminal.de/tutorial/guideline/font_size.gif

I want to add the shapes like in this image to the margins and header of the document, what is the best way to achieve this? I am beginner in LaTeX.