I just use white, but then there's so much stuff in the house that colours would be an overkill. I decorate with bookcases
Seriously though, Tengu ignore this horde of blokes recommending old aged clothing colours
Go and have a look at 'tones' in the paint charts.
Find something that's fixed in each main room (like your tiles) and find a warm or cool tone that works with it. Like very, very pale creamy peach with terracotta, or pale blue which works with it too
Remember that curtains and blinds and lightshades are an easy way to introduce colour and interest in a plainish room.
Don't go all dizzy and have one room blue, one purple, one green, one grey, though; find shades that works gently throughout the house. Subtle is the word. Tones and hint of tint are a good way to make rooms look open and airy and spacious and warm or calm. Unremitting mushroom coloured walls aren't a good idea, and modern, "make a statement!", sixties style wallpapers can be a very personal choice. Borders can pick up colours, but in a rented house......they are often too easily damaged/need restuck at edges and ends.
It's okay for Dharma to have orange ceilings, she's an unreconstructed hippy
and it suits her somehow
but I don't think it's quite you or something most people looking to rent would find appealing; white ceilings are simple, clean and easily maintained.
Basically you want a clean, clear and relatively plain interior that whoever moves in can live with, without feeling either overwhelmed or depressed.
Gentlemen..........I married a man whose idea of bachelor house painting was grey
...........don't do it Tengu, trust me on this, it's blooming awful
Took me months to remove that battleship grey from all the glosswork in the house
I don't care 'how' trendy it might be now, it's boringly depressing and always looks slightly grubby.
Clean, simple, scrubbed and smelling fresh, and the house will have more appeal than something screaming of someone's personal idiosyncracies, and it won't cost you a fortune in interior decoration either
Best of luck with it
M