OK , Let me say that I too am disappointed. You can work with the orange.... I use Go keyboard and used a water or beach background, and then changed the upper ( messenger app part) to an orange sunset. It looks pretty good. However, I switched from an iPhone to an android for 3 reasons;
1. The ability to customize - i.e., you certainly can't get a cool icon pack for iPhone - and thats just one example...
2. Widgets.... nothing else needed to say
3. The stylus in my Note 4 - it just doesn't get any better than to pull out a pen an jot down whatever you want and be able to move that anywhere you want it.
I don't like being locked down to a color. Even if I liked the color, the thought of not being able to change it is troubling to my customizing mindset.
I am Ok with everything else about Lollipop thus far. Don't give up on Android - find another solution !!
Here is my suggestion to you all:
Get Go SMS pro and the Go keyboard ~ Best Keyboard I've tried and the messaging app lets you fully customize while it is S pen friendly and the paid pro version is split screen ready ....
Textra is lacking in these functions.