Halfords caliper paint

As I had to partly dismantle the rear calipers anyway as they were binding, I thought I’d brighten up the calipers with a coat of caliper paint.  I’d used the Halfords stuff a few years ago and got a good finish so picked up a fresh tin of red.

Is it just me, or have they changed the formula and it’s now rubbish?  Paint is very thin and runs easily, and I can’t get decent coverage.  Given them 3 coats and it’s still really patchy.

Anyone got any recommendations?  Alternatively how do I remove the mess - I’m thinking of wiping off with cellulose thinners, but a bit worried that will attack the rubber seals.

Thanks

Dave