Some ideas:

Paint the door something other than black; paint the walls something other than beige; change the hardware to something lighter in color; rather than replace the counter top, just remove the 4" back piece and replace with a white backsplash.

I'm sure others will come along with more suggestions. :)

I think once you've removed those uppers, exchanged the black appliances with SS, all that's needed are lighter wall paint, under cabinet lighting, and a light fixture with more light bulbs. I know people don't like track lights, but I really like the directional track light fixtures from IKEA.

https://m.ikea.com/us/en/catalog/products/art/70346098/

In addition to the above, under cabinet lighting could help (can’t tell if it’s the pics, but they look very low to the counter tops). A more robust overhead light would help too

Also, I would consider white appliances