Hi, Fred.
I've been playing around with Darry's 're-jig' of 4.3.1 (4.3.11 'Phoenix') - he's remastered it with an upgraded glibc, and quite a number of other upgrades - and been having a lot of fun generally. It's still remarkably usable as a daily driver, albeit with various workarounds, naturally.
(Even running a recent version of Iron, and FF68esr via a Tahrpup 'jail', after watchdog showed the way. Which is about the only way you'd get modern browsers running in such an elderly Pup.)
I've had one problem with it right from the start, though. The display has always been far too bright & 'washed-out' looking; even the monitor's brightness/contrast controls could never really get a 'handle' on it. Perhaps it's just the combination of 431's X-server/Xorg stuff and my specific graphics hardware; I really wouldn't like to say. The monitor calibration tools built-into Puppy have never done anything for me, and I've been meaning to explore all the variations on brightness controls we cooked up between us (I still have every version we put together, even those that were superseded by improved versions!)
Anyway; to cut a long story shorter, the first thing I decided to try was the Wary version of RShift-lite (v3). It's cured it, mate. Works perfectly.....so the brightness issue is sorted, and I've got my night-time red tint back, too. (And the geo-locate got down to just 2 miles away, so.....that's close enough).
So we now know it works fine in Puppy 4.3.1, as well. Just wanted to let you know.
Mike.