In the 1984 film they went to amazing lengths to make sure they never showed the sky as blue. According to Herbert there is not enough moisture for the sky to be blue. Making the sky a deep red/orange colour like in the main menu pic might be a good way to get around this. Plus it says 'alien planet' more than 'day on the beach'. Alternately, you could have it fade to black with stars up there.
You are right, of course Arrakis has a different athmosphere than earth, sky should be red or black.
I also think there should not be grass on the dunes. Can that be painted out? I can do it if you like.
They told me, it's sand verbena.

3) Are you planning to change the food (water) bar to blue and the build bar to some other colour? That would be great.
We should do this for main screen's city shields. In city screen I want to remove the food stackbar and replace it with a reservoir graphic.
4) I some point I need to improve the water drop icons and gamefonts, and fix the bitten bread that I missed.
The remaining bread icon is called 'FontSymbols.EATEN_FOOD_CHAR'. If you don't find it, I can change this to a water icon with python.
Other things I want to do:
- cut out upper side of the archway again to make it look more clean
- make all changes optional by adding new switches to the bug option screen allowing you to return to the old/default graphics