I will be teaching assistant for an analysis course next semester: I'll present the solutions of the exercices to the class. Syllabus is sequences and series of functions, Riemann and Lebesgue integrals, L^2 spaces, etc. Solutions of the harder exercices can get lenghty and technical.
I'd like to use colors to liven up the board, highlight the structure of the demonstrations and make technical manipulations easier to follow.
Do you have examples/tips of what to do and not to do?