At the meeting you could propose some amendments. Amendments should be OK so long as they don’t negate the purpose of the motion (IE, you can’t have an amendment to insert the word ‘not’!). Minor and in the spirit of the motion is OK. So, move an amendment to put an upper limit on the cost (put a generous margin on top of an indicative quote you could get yourself). Move another amendment to make approval subject to the colour being made known to owners and no objection being received within some specified reasonable period.
If the EC are simply a bit snowed under and disorganised you won’t be holding up worthwhile maintenance but you will be imposing a little appropriate discipline.