If you want to have pale blue walls, have the paint store mix up the same color formula you used for the cabinets, but in a larger quantity of paint. You will get a paler shade, and it will match tones. If they take the formula for a pint and put it into a quart, you get "50%". If they use the formula for a quart and put it into a gallon, you get "25%" ... going even lighter usually doesn't work too well. I think pale yellow walls would look smashing with those cabinets.

Another thought (since we've all been suggesting yellow, and perhaps you've been there done that and want a change)...the DAT (design around this) threads on the kitchen forum had some fun blue and green kitchens; I'm linking to the 60s ranch thread, but I think the formica thread had options, too. Sadly, many of the pictures are gone now, but some are still some there. I bet you could find fabric pairing that blue with a pale green and use the fabric and accessories to tie things together. BM Pale Vista could be worth a look if you like that combo. Maybe some pops of either red or yellow, like in a clock. Here is a link that might be useful: DAT 60s ranch house thread with some blue & green

As for paint color - you really want to have samples of the floor you will be going with in order to best select actual paint. In theory, you could have the cabinets match the adjacent wall color or go with a whiter shade of the wall color. You do not want to select a 'yellow' or 'pink' white as the wall color is very greenish griege so stick with that tone.

I like both but do favor the lighter for now. I thought about herringbone but decided on brick lay as you see from my pic. I chose that bc I also picked a tonal tile with 3 shades for texture & interest wo being too busy (see pic) & chose grout to match tile not counter. My tile is 2 1/2” x 5”, Ztile Melange, Green Tea color. Looks gray! My advice to pass along on picking BS is to ”wait until the countertops are installed”! I’m so glad I did. I .read that over & over from Houzz Pros too. I took the advice to heart bc the person at countertop company told me to just wait! I had narrowed my choice down to 2, which it looks like you have done. Once tops were in I did a 180 change on BS tile I’d decided on & went with my second choice. And I was looking at multiple pieces of the 2 tiles to get a better idea. A surprise to me for sure that I changed. All of those whose opinions I’d solicited also seemed amazed at difference in look sitting on top of new counter. And, I solicited opinions from every trades person in my kitchen as well as friends & neighbors! 99% of them changed their pick after counters in too. Reason is that until counter is in, you’re looking at a small sample and a huge vertical slab. Light hits the counter very differently on the horizontal & in your home light. The BS tile as well. So, make sure both of your picks are available on quick turnaround & just wait. BTW, at this point, my pick for you is lighter tile Bc I Like it better with darker cabinets & tile will be right next to cabinet color next to frig. When I look at BS my eye goes down not up so I see base cabs more. Love your counter & cab together.