New room choice #1: To paint or not to paint (and if so, what color?)

 This was not what my bedroom looked like as a child, but I wish it was.

I think I'll just gaze at it for a while...


Sooo... I am probably switching bedrooms in my house.

Due to, er, difficulties, I'm living with my parents. But, now my little brother's moving out, which means he's vacating his man-cave of a room, which is, incidentally, the largest bedroom.

You would think this would make the room automatically up for grabs. Not true.  All sorts of other family members get a vote in what happens to this room, including ones that haven't lived at home for years.
So, a great deal of discussion, and, to put it frankly, haggling, has ensued.

My father is mostly concerned that there are enough available beds should the youngest two boys suddenly move back in, or if one of my sisters wants to stay overnight, or both.  My siblings are mostly concerned that I not paint over The Mural.  I want to.  I'm not allowed to, or I don't get the room ( and boy howdy could I use the extra space).

The Mural is a product of my youthful (8th grade thru Freshman year) enthusiasm, and has a long history behind it.
Back when I was very young, my siblings and I would switch rooms every year or two.  I thought this was normal.  Much later, I realized that we switched rooms whenever a new baby came along and mom and dad had to figure out where to put him/her.  By the time I was 11, I was in a 12x13 room, along with four other of my sisters, ranging from age 8-21, and was sharing a full bed 8 months of the year (we were on a rotation, so that each sister got 4 glorious months of sleeping alone).  We were like sardines, pickled in dust and estrogen.
So, I guilted my two sisters nearest me in age into saving money with me.  We used the money to buy lumber for a loft, and paint for the walls.  We lofted three of the beds, and designed the bottom two beds so that they could be removed .
I picked out the paint colors.  It was not a discussion.
We painted the walls a sunny, buttery yellow with tomato-red trim.  On one wall, we painted a mural.  My sisters weren't happy with the original colorfield abstract landscape I designed, so, communally, we ended up finger painting in pine trees on the hills and adding a sunsetty glow to the dabbed on clouds.
This is The Mural.
it's ugly.

The thing is, they love it.  And now, the two younger boys have been in that room for a while, and they're attached to it too.
I too am sentimentally attached, but that just means I want to take a picture before I paint over the gawdawful thing.

We've reached a compromise that I think will work.  I get to paint the other walls and the woodwork any color I choose, but I can't paint the central panel of the scenic overlook.  I'm going to tack up some fabric, though, so I don't have to look at it every day.
Problem solved.

Now, on to wall colors.

This is the wall colors I'm currently thinking about, but the wood trim would be a pale gray, rather than white.  Also, I'm painting the ceiling cobalt blue with stenciled gold stars scattered across it.
I've always wanted to have a ceiling like that.

Here's the other options that have been tempting me:

that robin's egg blue is calming, but yummy.  the thing is, the room faces Northwest, and is well shaded, so I'm afraid that it won't look nearly as good when the incandescent or flourescent light mixes  with it.

I love these luscious zinnia pinks!  They're so warm and summery, and wood looks so good next to them.  I think this would be my first choice for a sitting room or studio accent wall, but it might be too visually stimulating for a bedroom.  

So, what do you think?  I'd love to hear your opinion!