Urine Walls.

I got the stab in my heart when the landlord of our new house told us we couldn't paint. Usually I would break this rule but given that it is very hard to paint a bay window w/o anyone noticing I have to suffer with the already yellow walls. I like yellow in small doses; a pair of shoes, a small purse, nothing huge. Nor anything I have to look at on a daily basis. How do I even begin to design a home around yellow? And it seems most photos I see people w/yellow walls also have yellow curtains? Why? Does this mean I have to have yellow curtains? Crying on the inside. And outside. Really. I am.