What I found though, was an Open Source Arduino TFT graphics library called “Pixels” from Pixelmeister https://github.com/zxfr/Pixels. The library supports hardware and software SPI, 8 and 16 bit parallel interface.
This library supports a wide array of screen controllers that would be awesome to have in the Spark ecosystem. Some of them are: HX8340, HX8352, ILI9163, ILI9325, ILI9341, ILI9481, S6D0164, S6D1121, SSD1289, and ST7735.
Before I try to port it, has anybody played with it before?