I have just cleared out an area under the house - a small room at the back of the garage that connects to the laundry/come storage room on the other side - a bit hard to explain the layout, but it works perfectly now as a second office/study area that I am using to gather and sort literature for further study. It has a large filing cabinet, desk, sorting table and lots of shelving for pre-sorting piles of literature which I have accumulated so effortlessly over the years! It comes with window views out to the garden and lovely water glimpses (if I open the garage door) and is lovely and cool in summer. While it is well organised and tidy, I have deliberately left it fairly rustic (read 'man cave' like) as I don't want to feel like I need to be 'cleaning and tidying' while I am there. I have a stack of classical and choral music that I play while down there ... in between listening to the cricket in summer, of course! Some great names in here re what to call it .... perhaps my 'She Nook' or 'the Reading Room'

I'm not 100% sure what you're asking, but if you're looking for suggestions whether to make the lower cabinets grey and the upper cabinets white or vice versa, then I would be tempted to make the lower cabinets grey. I think this would help to make the ceiling feel higher and the overall space larger and brighter. But, it may depend upon what style you're going for, whether you have an island benchtop and, if so, what material/colour will be on the rear/exposed side of the island benchtop, the amount of natural lighting, etc. You can easily search through Houzz photos by room, size, colour, materials, etc. Here are a few examples I found from a quick search which may help:

We went with Monument and I am delighted. I was worried about it making the house hotter, but not at all as we added some extra insulation while the roof was lifted. We look over our roof to Mt Dandenong and it really feels like we are floating above the rooftops now (previously had a lighter color). I have also noticed there is far less glare being darker. Pic below is not my best shots ... but you get the idea. Forgot to add we also have a flat cliplock roof and used a combination of Monument and Dune on the house.

We had a guy who printed posters print the photo and stick it on the glass for us (to make sure there were no air bubbles). He delivered it to the glazier who was installing the splashback. There was so much interest as it sat in the showroom, the glazier then started offering glass with pictures actually printed onto them... If your wall was smooth, you could put the 'poster' print onto ther wall as another option.