Ummm, not an expert but like you the only painting that got my attention is by Terezia Conțiu. The color palette is eye-catching. But I think the artist tried to paint the bubbles and failed. I could be wrong though, they might just be circles.
Rest,,,I don't know what to comment.
Well, she's the only one who knows how those bubble were made. I guess she would have answered my question at the opening but I never attend those as you can't photograph the artworks due to the crowd.