Re: Topsides going from 'White' to flag blue
We're actually in the middle of this exact task right now! First, we decided to lighten ours just a tad using the white Brightsides we had for our deck. We've been roll and tipping with another roller, not a brush and have had great results so far. We're two coats in right now. We'll likely need to do 4 coats as it's hard to cover the white evenly. If you haven't started yet I would recommend you tint the primer. Get your hull as fair as possible and sand the hell out of it - dark paint shows any imperfections. Our boat is in Florida and we've been painting only when it's 60+ degrees and winds less than 9mph. Word of advice, don't use any accelerator as Brightsides is chemically designed to dry slower and spread out to avoid the orange peel look - or so Interlux told us.
I'll post pics for you once she's done. We've been taking them after each coat. We must be doing something right as a bunch of boaters have stopped by and told us the paint job looks great already.