Jimmy is on he right track
Your bylaws will have some by law about changing the look, or damage to common poroperty or some such bylaw. Be creative with the interpretation.
Insist that the strata manager issue a breach notice to the chairman.
This saves having to go to the tribunal and the effec t is more immediate
Mind you the chairman may object to his own strata manager issuing such a notice is which case you may just have to head to the tribunal but this time under section 232 ( failure of the OC to act)