I've read mixed reviews of the look.

Could it be added after the fact? I'd be afraid to only tint the ones not under the porch if it will look different.

We have a West facing yard and did not tint the windows. There are 4 large windows not under the porch. so far not an issue [we have woods beginning about 1/2 acre out though].

They could be tinted after the fact, but it would be by an after market type application (which I have not researched yet) but am assuming would be a lot more expensive. I'm just afraid that if we don't need it after all, it wont be able to be undone.. I agree about just tinting some of them and it looking odd.

Oberon, I think you are right, it's actually a glass color, I'll have to research a bit more on the LowE coating and your other suggestion.

rjinga, what window company are you talking with and what have they told you about your windows so far other than $500 for tint?

I much prefer solar shades since then on cloudy days i can roll them up . They also control the heat , the UV rays and allow the view. I have seen some window film that has failed and it is not a pretty sight. I would never choose tinted windows

Patricia, do you have a brand you like?

Look at Smith and Noble for solar shades.