WOW, you got the small problem of the middle image fixed nicely, you changed the image of the artist and it loads immediately.
The colouring is better, but if I were you play around with different colour schemes, I feel it is a bit cold, when the main paintings seem a bit cold (sorry just how I see them) maybe warm the site up to distinguish better from the art.
The spacing between the divs, I would try and keep uniform all over the site
the footer I would make the text stand out a bit more and probably centre it, but that’s just me.
when clicking a piece of art, I would change the colour of the font, its a bit close to the background colour.
the main links, what about highlighting where your at in the site, maybe with an underline, but make the underline like a brush stroke???
other than that you have done some good changes