Just from what you've written here, you've shown that you have a basic of understanding of your renovation design goals: to do what you can to open up living spaces, and to choose materials that pull together your chosen color palette. 

Palette for the walls with a theme has a nice effect.

I think it makes the rentals look so much better than having a flat/white palette on everything.

Excellent job, great staging and color palette, congratulations!

Topics might include:Real Estate Finance (gonna need money for the flips)Building Code (specific to your area, it will be your bible for flips)Interior design/decorating (unless you have someone to pick color palettes for you)I have found that a majority of books out there are written to be motivational and aimed at a wide audience (to sell more books).

Color Palette: let’s keep an eye on both Pantone’s and Sherwin-Williams colors because these will be the colors trend for 2019 , black and white will definitely disappear from the color palette.2.

Your gray hued counters and backsplash is what is throwing this palette off.

With elements of elaborate ornamentation, asymmetrical values, pastel color palette, and curved or serpentine lines.......OMG!  

With a bold colored retro tile, skewing the fixtures minimalist/modern is the easiest way to keep things from clashing and to appeal to a broader palette. 

If you, the seller, can deliver a palette that matches what the buyer would love to do on their own but can't, you're guaranteed to sell that house for top dollar.If you don't know what colors to use, try hiring a designer.