Maybe add some colorful artwork or decor.  

Things to consider are tile size (timeless 8x8, 12x12, 16x16, subway, vs trendy 6x24, large plank tiles, etc.) textures (trendy fabric look) and colors.  

we are using vinyl click tiles from HD in a light gray stone color for a kitchen that leads to a 1950s oak hardwood floor.

Put some plants outside.Print up some color flyers and get a sale sign thing and put in the yard.My house sold in 10 days,, agent split $28,275 commission.. that's $1413.00 a day she made..My costs to have held on to it for another couple of months would have been about 900.00 a month,, taxes, ins, So all depends on what your selling. price your selling at,, and how bad you need to sell it.. if it's priced right,, I'd pay a appraiser to come out and appraise it for 350,00 so you know what it will appraise for so you know where you are at if needed.. 

What color would you guys repaint it?

You could try painting the grout with grout colorant.  

-Plus other "non-financial benefits", like being able to paint any color we choose etc...I can see situations where purchasing a home would be a bad decision, but that was not the case for me.

If you're keeping the siding you could just repaint a new color like light blue or dark grayish blue for window trim just do simple frames and for light blue paint window frames trim and outer doors and dark blue including garage door make sure to match garage door with front door it looks sloppy when they don't match. if you're changing the front you could try flat stone in charcoal grey and match the siding on the sides do the house with same paint color.

You will need to experiment with different sized letters, different colored pieces of paper, different colored envelopes, handwritten-looking letters, etc.

wow new color looks great and stands out!