Minor cleanup, added HiZ as color

src/color.rs

@@ -30,7 +30,7 @@ pub enum TriColor {
     Chromatic,
 }
 
-/// For the 5in65 8 Color Display
+/// For the 5in65 7 Color Display
 #[derive(Clone, Copy, PartialEq, Debug)]
 pub enum OctColor {
     /// Black Color
@@ -47,6 +47,8 @@ pub enum OctColor {
     Yellow = 0x05,
     /// Orange Color
     Orange = 0x06,
+    /// HiZ / Clean Color
+    HiZ = 0x07,
 }
 
 impl From<()> for OctColor {
@@ -80,6 +82,7 @@ impl OctColor {
             0x04 => Ok(OctColor::Red),
             0x05 => Ok(OctColor::Yellow),
             0x06 => Ok(OctColor::Orange),
+            0x07 => Ok(OctColor::HiZ),
             _ => Err(())
         }
     }
@@ -99,6 +102,7 @@ impl OctColor {
             OctColor::Red => (0xff, 0x00, 0x00),
             OctColor::Yellow => (0xff, 0xff, 0x00),
             OctColor::Orange => (0xff, 0x80, 0x00),
+            OctColor::HiZ => (0x80, 0x80, 0x80), /* looks greyish */
         }
     }
 }

src/epd5in65f/mod.rs

@@ -155,7 +155,7 @@ where
     }
 
     fn clear_frame(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
-        let bg = 0x77; /*clear frame */ //OctColor::colors_byte(self.color, self.color);
+        let bg = OctColor::colors_byte(self.color, self.color);
         self.wait_busy_high();
         self.send_resolution(spi)?;
         self.command(spi, Command::DATA_START_TRANSMISSION_1)?;

src/lib.rs

@@ -86,13 +86,13 @@ pub(crate) mod type_a;
 
 /// Includes everything important besides the chosen Display
 pub mod prelude {
-    pub use crate::color::{Color, TriColor};
+    pub use crate::color::{Color, TriColor, OctColor};
     pub use crate::traits::{RefreshLUT, WaveshareDisplay, WaveshareThreeColorDisplay};
 
     pub use crate::SPI_MODE;
 
     #[cfg(feature = "graphics")]
-    pub use crate::graphics::{Display, DisplayRotation};
+    pub use crate::graphics::{OctDisplay, Display, DisplayRotation};
 }
 
 /// Computes the needed buffer length. Takes care of rounding up in case width