:::Thanks for the link. Undergrowth is the VG painting nearest to my current residence, so it holds a special place. I can more see your point now, and there is indeed much mythology regarding Vincent's work (such as  Wheatfield with Crows being his final painting). As you have some reliable sources, why not expand the article with them, something like "Van Gogh's Auvers period was historically considered to reflect a dark and somber mood", leave the current examples in the article, then follow up with "Newer research counters the previous belief...", etc. I think it would do the bio great service and end the current edit war.  
 ::::I found when I was making The Card Players article, many long-held assumptions regarding Cézanne's work over the previous century are being corrected only within the past few years, with infrared technology and such. If older research can be updated with new findings, they should be included.