To catch the eye: some colour (the xcolor package) and proper boxes (the tcolorbox package). Two simple tools that transform the look of a document.
Colour with xcolor
\textcolor{colour}{text} colours the text; \colorbox{colour}{text} colours the background.
Compile Compile: one word in colour and one word highlighted. Then try changing the colours (blue, teal, orange…).
Boxes with tcolorbox
A titled, coloured box, perfect for a note or a definition.
Compile Compile this box, then change its title and its colours (
colback = background, colframe = border). Without memorising the options: build your boxes visually and grab the
tcolorbox code. Open the box editor → Key point:
xcolor to add colour (\textcolor, \colorbox), tcolorbox for titled boxes (colback/colframe).