Fix no color when only one transfer

src/components/plates/util.rs

@@ -26,6 +26,7 @@ impl ColorPalette {
     pub fn get_u8(&self, t: u8, n: u8) -> [f64; 3] {
         assert!(t > 0, "t must be greater than zero!");
         assert!(n > 0, "There cannot be zero points!");
+        if n == 1 {return self.get(0.5f64)}
         self.get((t - 1) as f64 / (n - 1) as f64)
     }
 }