diff --git a/common/frogarized/frogarized.py b/common/frogarized/frogarized.py
index 013c746..cc3e488 100755
--- a/common/frogarized/frogarized.py
+++ b/common/frogarized/frogarized.py
@@ -8,6 +8,7 @@ import json
 
 import colorspacious
 import numpy as np
+import numpy.typing as npt
 
 # Original values for the Solarized color scheme,
 # created by Ethan Schoonover (https://ethanschoonover.com/solarized/)
@@ -59,43 +60,50 @@ SOLARIZED_RGB = np.array(
 parser = argparse.ArgumentParser(
     description="Generate a base16-theme based derived from Solarized"
 )
-parser.add_argument("--source", choices=["lab", "rgb"], default="lab")
-parser.add_argument("--lightness_factor", type=float, default=1.0)
-parser.add_argument("--chroma-factor", type=float, default=1.0)
-parser.add_argument("--hue_shift", type=float, default=-75.0)
-parser.add_argument("--polarity", choices=["dark", "light"], default="dark")
-parser.add_argument(
+_ = parser.add_argument("--source", choices=["lab", "rgb"], default="lab")
+_ = parser.add_argument("--lightness_factor", type=float, default=1.0)
+_ = parser.add_argument("--chroma-factor", type=float, default=1.0)
+_ = parser.add_argument("--hue_shift", type=float, default=-75.0)
+_ = parser.add_argument(
+    "--polarity", choices=["dark", "light"], default="dark"
+)
+_ = parser.add_argument(
     "--output", choices=["json", "truecolor"], default="truecolor"
 )
 args = parser.parse_args()
 
+
+def cspace_convert(
+    array: npt.NDArray[np.float64], src: str, dst: str
+) -> npt.NDArray[np.float64]:
+    return colorspacious.cspace_convert(array, src, dst)
+
+
 # Convert source to JCh color space
 if args.source == "lab":
-    solarized_jch = colorspacious.cspace_convert(
-        SOLARIZED_LAB, "CIELab", "JCh"
-    )
-elif args.source == "rgb":
-    solarized_jch = colorspacious.cspace_convert(
-        SOLARIZED_RGB, "sRGB255", "JCh"
-    )
+    solarized_jch = cspace_convert(SOLARIZED_LAB, "CIELab", "JCh")
+else:  # rgb
+    solarized_jch = cspace_convert(SOLARIZED_RGB, "sRGB255", "JCh")
+
 
 # Build frogarized theme
-jch_factor = [args.lightness_factor, args.chroma_factor, 1]
-jch_shift = [0, 0, args.hue_shift]
-frogarzied_jch = np.vstack(
+jch_factor: list[float] = [args.lightness_factor, args.chroma_factor, 1]
+jch_shift: list[float] = [0, 0, args.hue_shift]
+frogarized_jch = np.vstack(
     [solarized_jch[:8] * jch_factor + jch_shift, solarized_jch[8:]]
 )
 
 # Convert frogarized to RGB
-frogarized_srgb = colorspacious.cspace_convert(
-    frogarzied_jch, "JCh", "sRGB255"
+frogarized_srgb = cspace_convert(frogarized_jch, "JCh", "sRGB255")
+frogarized_rgb = np.asarray(
+    np.rint(np.clip(frogarized_srgb, 0, 255)), dtype=np.uint8
 )
-frogarized_rgb = np.uint8(np.rint(np.clip(frogarized_srgb, 0, 255)))
+
 if args.polarity == "light":
     frogarized_rgb = np.vstack([frogarized_rgb[7::-1], frogarized_rgb[8:]])
 
 # Output
-palette = {}
+palette: dict[str, str] = {}
 for i in range(16):
     rgb = frogarized_rgb[i]
     r, g, b = rgb