She's got these fabulous accents in yellow and pink - and the green stands out nearly as far - and she isn't using them! A bronze chair with a green cushion. Paint the coffee table rust - it's lost against the sofa, and it's interesting! Tragic!
The lamps aren't filling their space - those tables need lamps that work with their texture and bring color definition up and into the corners fill in with plants.. https://www.etsy.com/listing/1239952055/mid-century-lamp-ceramic-mustard-and
https://www.mercari.com/us/item/m76785265029/
The thing to remember is that black is now an accent, not the room. https://www.mercari.com/us/item/m76785265029/
A wallpaper accent wall will update to the 21st century. For that, I'll give up a carpet with pink, but there needs to be brighter furniture.
It might even take vanishing the 1990s big lumps o'black. Frugally! Check out the camel. Autumn, yes? https://www.amazon.com/U-NICE-HOME-Velvet-Furniture-Slipcovers/dp/B09VSTVHNN/ref=mp_s_a_1_32?c=ts&keywords=Sofa+Slipcovers&qid=1678694107&refinements=p_n_feature_twenty_browse-bin%3A3254101011&s=furniture&sr=1-32&ts_id=3735891
Now you have to rethink the carpet, because you're not depending on it to set the entire mood...