Yesterday I started playing around with a TFT color display connected to the ESP8266. First I adapted example code to download BMP files to the flash memory, and boy, this display has some nice intense colors!
To get an idea how a color version of the Weatherstation would look like I got a little creative and designed a image mockup and uploaded it to the ESP-TFT combo. This is just a static image for now but the images, fonts and colors could look exactly like that, except for anti- aliased fonts. Leave me a comment if you like it!