diff --git a/material/material.go b/material/material.go
index bb8ec31..5b2a23e 100644
--- a/material/material.go
+++ b/material/material.go
@@ -4,123 +4,119 @@ import "sort"
 
 type ColorPalette map[string]int
 
-var red = ColorPalette{
-	"50": 0xffebee, "100": 0xffcdd2, "200": 0xef9a9a, "300": 0xe57373,
-	"400": 0xef5350, "500": 0xf44336, "600": 0xe53935, "700": 0xd32f2f,
-	"800": 0xc62828, "900": 0xb71c1c, "A100": 0xff8a80, "A200": 0xff5252,
-	"A400": 0xff1744, "A700": 0xd50000,
-}
-var pink = ColorPalette{
-	"50": 0xfce4ec, "100": 0xf8bbd0, "200": 0xf48fb1, "300": 0xf06292,
-	"400": 0xec407a, "500": 0xe91e63, "600": 0xd81b60, "700": 0xc2185b,
-	"800": 0xad1457, "900": 0x880e4f, "A100": 0xff80ab, "A200": 0xff4081,
-	"A400": 0xf50057, "A700": 0xc51162,
-}
-
-var purple = ColorPalette{
-	"50": 0xf3e5f5, "100": 0xe1bee7, "200": 0xce93d8, "300": 0xba68c8,
-	"400": 0xab47bc, "500": 0x9c27b0, "600": 0x8e24aa, "700": 0x7b1fa2,
-	"800": 0x6a1b9a, "900": 0x4a148c, "A100": 0xea80fc, "A200": 0xe040fb,
-	"A400": 0xd500f9, "A700": 0xaa00ff,
-}
-var deepPurple = ColorPalette{
-	"50": 0xede7f6, "100": 0xd1c4e9, "200": 0xb39ddb, "300": 0x9575cd,
-	"400": 0x7e57c2, "500": 0x673ab7, "600": 0x5e35b1, "700": 0x512da8,
-	"800": 0x4527a0, "900": 0x311b92, "A100": 0xb388ff, "A200": 0x7c4dff,
-	"A400": 0x651fff, "A700": 0x6200ea,
-}
-var indigo = ColorPalette{
-	"50": 0xe8eaf6, "100": 0xc5cae9, "200": 0x9fa8da, "300": 0x7986cb,
-	"400": 0x5c6bc0, "500": 0x3f51b5, "600": 0x3949ab, "700": 0x303f9f,
-	"800": 0x283593, "900": 0x1a237e, "A100": 0x8c9eff, "A200": 0x536dfe,
-	"A400": 0x3d5afe, "A700": 0x304ffe,
-}
-var blue = ColorPalette{
-	"50": 0xe3f2fd, "100": 0xbbdefb, "200": 0x90caf9, "300": 0x64b5f6,
-	"400": 0x42a5f5, "500": 0x2196f3, "600": 0x1e88e5, "700": 0x1976d2,
-	"800": 0x1565c0, "900": 0x0d47a1, "A100": 0x82b1ff, "A200": 0x448aff,
-	"A400": 0x2979ff, "A700": 0x2962ff,
-}
-
-var lightBlue = ColorPalette{
-	"50": 0xe1f5fe, "100": 0xb3e5fc, "200": 0x81d4fa, "300": 0x4fc3f7,
-	"400": 0x29b6f6, "500": 0x03a9f4, "600": 0x039be5, "700": 0x0288d1,
-	"800": 0x0277bd, "900": 0x01579b, "A100": 0x80d8ff, "A200": 0x40c4ff,
-	"A400": 0x00b0ff, "A700": 0x0091ea,
-}
-
-var cyan = ColorPalette{
-	"50": 0xe0f7fa, "100": 0xb2ebf2, "200": 0x80deea, "300": 0x4dd0e1,
-	"400": 0x26c6da, "500": 0x00bcd4, "600": 0x00acc1, "700": 0x0097a7,
-	"800": 0x00838f, "900": 0x006064, "A100": 0x84ffff, "A200": 0x18ffff,
-	"A400": 0x00e5ff, "A700": 0x00b8d4,
-}
-
-var teal = ColorPalette{
-	"50": 0xe0f2f1, "100": 0xb2dfdb, "200": 0x80cbc4, "300": 0x4db6ac,
-	"400": 0x26a69a, "500": 0x009688, "600": 0x00897b, "700": 0x00796b,
-	"800": 0x00695c, "900": 0x004d40, "A100": 0xa7ffeb, "A200": 0x64ffda,
-	"A400": 0x1de9b6, "A700": 0x00bfa5,
-}
-var green = ColorPalette{
-	"50": 0xe8f5e9, "100": 0xc8e6c9, "200": 0xa5d6a7, "300": 0x81c784,
-	"400": 0x66bb6a, "500": 0x4caf50, "600": 0x43a047, "700": 0x388e3c,
-	"800": 0x2e7d32, "900": 0x1b5e20, "A100": 0xb9f6ca, "A200": 0x69f0ae,
-	"A400": 0x00e676, "A700": 0x00c853,
-}
-var lightGreen = ColorPalette{
-	"50": 0xf1f8e9, "100": 0xdcedc8, "200": 0xc5e1a5, "300": 0xaed581,
-	"400": 0x9ccc65, "500": 0x8bc34a, "600": 0x7cb342, "700": 0x689f38,
-	"800": 0x558b2f, "900": 0x33691e, "A100": 0xccff90, "A200": 0xb2ff59,
-	"A400": 0x76ff03, "A700": 0x64dd17,
-}
-var lime = ColorPalette{
-	"50": 0xf9fbe7, "100": 0xf0f4c3, "200": 0xe6ee9c, "300": 0xdce775,
-	"400": 0xd4e157, "500": 0xcddc39, "600": 0xc0ca33, "700": 0xafb42b,
-	"800": 0x9e9d24, "900": 0x827717, "A100": 0xf4ff81, "A200": 0xeeff41,
-	"A400": 0xc6ff00, "A700": 0xaeea00,
-}
-
-var yellow = ColorPalette{
-	"50": 0xfffde7, "100": 0xfff9c4, "200": 0xfff59d, "300": 0xfff176,
-	"400": 0xffee58, "500": 0xffeb3b, "600": 0xfdd835, "700": 0xfbc02d,
-	"800": 0xf9a825, "900": 0xf57f17, "A100": 0xffff8d, "A200": 0xffff00,
-	"A400": 0xffea00, "A700": 0xffd600,
-}
-var amber = ColorPalette{
-	"50": 0xfff8e1, "100": 0xffecb3, "200": 0xffe082, "300": 0xffd54f,
-	"400": 0xffca28, "500": 0xffc107, "600": 0xffb300, "700": 0xffa000,
-	"800": 0xff8f00, "900": 0xff6f00, "A100": 0xffe57f, "A200": 0xffd740,
-	"A400": 0xffc400, "A700": 0xffab00,
-}
-
-var orange = ColorPalette{
-	"50": 0xfff3e0, "100": 0xffe0b2, "200": 0xffcc80, "300": 0xffb74d,
-	"400": 0xffa726, "500": 0xff9800, "600": 0xfb8c00, "700": 0xf57c00,
-	"800": 0xef6c00, "900": 0xe65100, "A100": 0xffd180, "A200": 0xffab40,
-	"A400": 0xff9100, "A700": 0xff6d00,
-}
-var deepOrange = ColorPalette{
-	"50": 0xfbe9e7, "100": 0xffccbc, "200": 0xffab91, "300": 0xff8a65,
-	"400": 0xff7043, "500": 0xff5722, "600": 0xf4511e, "700": 0xe64a19,
-	"800": 0xd84315, "900": 0xbf360c, "A100": 0xff9e80, "A200": 0xff6e40,
-	"A400": 0xff3d00, "A700": 0xdd2c00,
-}
-var brown = ColorPalette{
-	"50": 0xefebe9, "100": 0xd7ccc8, "200": 0xbcaaa4, "300": 0xa1887f,
-	"400": 0x8d6e63, "500": 0x795548, "600": 0x6d4c41, "700": 0x5d4037,
-	"800": 0x4e342e, "900": 0x3e2723,
-}
-var grey = ColorPalette{
-	"50": 0xfafafa, "100": 0xf5f5f5, "200": 0xeeeeee, "300": 0xe0e0e0,
-	"400": 0xbdbdbd, "500": 0x9e9e9e, "600": 0x757575, "700": 0x616161,
-	"800": 0x424242, "900": 0x212121,
-}
-var blueGrey = ColorPalette{
-	"50": 0xeceff1, "100": 0xcfd8dc, "200": 0xb0bec5, "300": 0x90a4ae,
-	"400": 0x78909c, "500": 0x607d8b, "600": 0x546e7a, "700": 0x455a64,
-	"800": 0x37474f, "900": 0x263238,
-}
+var (
+	red = ColorPalette{
+		"50": 0xffebee, "100": 0xffcdd2, "200": 0xef9a9a, "300": 0xe57373,
+		"400": 0xef5350, "500": 0xf44336, "600": 0xe53935, "700": 0xd32f2f,
+		"800": 0xc62828, "900": 0xb71c1c, "A100": 0xff8a80, "A200": 0xff5252,
+		"A400": 0xff1744, "A700": 0xd50000,
+	}
+	pink = ColorPalette{
+		"50": 0xfce4ec, "100": 0xf8bbd0, "200": 0xf48fb1, "300": 0xf06292,
+		"400": 0xec407a, "500": 0xe91e63, "600": 0xd81b60, "700": 0xc2185b,
+		"800": 0xad1457, "900": 0x880e4f, "A100": 0xff80ab, "A200": 0xff4081,
+		"A400": 0xf50057, "A700": 0xc51162,
+	}
+	purple = ColorPalette{
+		"50": 0xf3e5f5, "100": 0xe1bee7, "200": 0xce93d8, "300": 0xba68c8,
+		"400": 0xab47bc, "500": 0x9c27b0, "600": 0x8e24aa, "700": 0x7b1fa2,
+		"800": 0x6a1b9a, "900": 0x4a148c, "A100": 0xea80fc, "A200": 0xe040fb,
+		"A400": 0xd500f9, "A700": 0xaa00ff,
+	}
+	deepPurple = ColorPalette{
+		"50": 0xede7f6, "100": 0xd1c4e9, "200": 0xb39ddb, "300": 0x9575cd,
+		"400": 0x7e57c2, "500": 0x673ab7, "600": 0x5e35b1, "700": 0x512da8,
+		"800": 0x4527a0, "900": 0x311b92, "A100": 0xb388ff, "A200": 0x7c4dff,
+		"A400": 0x651fff, "A700": 0x6200ea,
+	}
+	indigo = ColorPalette{
+		"50": 0xe8eaf6, "100": 0xc5cae9, "200": 0x9fa8da, "300": 0x7986cb,
+		"400": 0x5c6bc0, "500": 0x3f51b5, "600": 0x3949ab, "700": 0x303f9f,
+		"800": 0x283593, "900": 0x1a237e, "A100": 0x8c9eff, "A200": 0x536dfe,
+		"A400": 0x3d5afe, "A700": 0x304ffe,
+	}
+	blue = ColorPalette{
+		"50": 0xe3f2fd, "100": 0xbbdefb, "200": 0x90caf9, "300": 0x64b5f6,
+		"400": 0x42a5f5, "500": 0x2196f3, "600": 0x1e88e5, "700": 0x1976d2,
+		"800": 0x1565c0, "900": 0x0d47a1, "A100": 0x82b1ff, "A200": 0x448aff,
+		"A400": 0x2979ff, "A700": 0x2962ff,
+	}
+	lightBlue = ColorPalette{
+		"50": 0xe1f5fe, "100": 0xb3e5fc, "200": 0x81d4fa, "300": 0x4fc3f7,
+		"400": 0x29b6f6, "500": 0x03a9f4, "600": 0x039be5, "700": 0x0288d1,
+		"800": 0x0277bd, "900": 0x01579b, "A100": 0x80d8ff, "A200": 0x40c4ff,
+		"A400": 0x00b0ff, "A700": 0x0091ea,
+	}
+	cyan = ColorPalette{
+		"50": 0xe0f7fa, "100": 0xb2ebf2, "200": 0x80deea, "300": 0x4dd0e1,
+		"400": 0x26c6da, "500": 0x00bcd4, "600": 0x00acc1, "700": 0x0097a7,
+		"800": 0x00838f, "900": 0x006064, "A100": 0x84ffff, "A200": 0x18ffff,
+		"A400": 0x00e5ff, "A700": 0x00b8d4,
+	}
+	teal = ColorPalette{
+		"50": 0xe0f2f1, "100": 0xb2dfdb, "200": 0x80cbc4, "300": 0x4db6ac,
+		"400": 0x26a69a, "500": 0x009688, "600": 0x00897b, "700": 0x00796b,
+		"800": 0x00695c, "900": 0x004d40, "A100": 0xa7ffeb, "A200": 0x64ffda,
+		"A400": 0x1de9b6, "A700": 0x00bfa5,
+	}
+	green = ColorPalette{
+		"50": 0xe8f5e9, "100": 0xc8e6c9, "200": 0xa5d6a7, "300": 0x81c784,
+		"400": 0x66bb6a, "500": 0x4caf50, "600": 0x43a047, "700": 0x388e3c,
+		"800": 0x2e7d32, "900": 0x1b5e20, "A100": 0xb9f6ca, "A200": 0x69f0ae,
+		"A400": 0x00e676, "A700": 0x00c853,
+	}
+	lightGreen = ColorPalette{
+		"50": 0xf1f8e9, "100": 0xdcedc8, "200": 0xc5e1a5, "300": 0xaed581,
+		"400": 0x9ccc65, "500": 0x8bc34a, "600": 0x7cb342, "700": 0x689f38,
+		"800": 0x558b2f, "900": 0x33691e, "A100": 0xccff90, "A200": 0xb2ff59,
+		"A400": 0x76ff03, "A700": 0x64dd17,
+	}
+	lime = ColorPalette{
+		"50": 0xf9fbe7, "100": 0xf0f4c3, "200": 0xe6ee9c, "300": 0xdce775,
+		"400": 0xd4e157, "500": 0xcddc39, "600": 0xc0ca33, "700": 0xafb42b,
+		"800": 0x9e9d24, "900": 0x827717, "A100": 0xf4ff81, "A200": 0xeeff41,
+		"A400": 0xc6ff00, "A700": 0xaeea00,
+	}
+	yellow = ColorPalette{
+		"50": 0xfffde7, "100": 0xfff9c4, "200": 0xfff59d, "300": 0xfff176,
+		"400": 0xffee58, "500": 0xffeb3b, "600": 0xfdd835, "700": 0xfbc02d,
+		"800": 0xf9a825, "900": 0xf57f17, "A100": 0xffff8d, "A200": 0xffff00,
+		"A400": 0xffea00, "A700": 0xffd600,
+	}
+	amber = ColorPalette{
+		"50": 0xfff8e1, "100": 0xffecb3, "200": 0xffe082, "300": 0xffd54f,
+		"400": 0xffca28, "500": 0xffc107, "600": 0xffb300, "700": 0xffa000,
+		"800": 0xff8f00, "900": 0xff6f00, "A100": 0xffe57f, "A200": 0xffd740,
+		"A400": 0xffc400, "A700": 0xffab00,
+	}
+	orange = ColorPalette{
+		"50": 0xfff3e0, "100": 0xffe0b2, "200": 0xffcc80, "300": 0xffb74d,
+		"400": 0xffa726, "500": 0xff9800, "600": 0xfb8c00, "700": 0xf57c00,
+		"800": 0xef6c00, "900": 0xe65100, "A100": 0xffd180, "A200": 0xffab40,
+		"A400": 0xff9100, "A700": 0xff6d00,
+	}
+	deepOrange = ColorPalette{
+		"50": 0xfbe9e7, "100": 0xffccbc, "200": 0xffab91, "300": 0xff8a65,
+		"400": 0xff7043, "500": 0xff5722, "600": 0xf4511e, "700": 0xe64a19,
+		"800": 0xd84315, "900": 0xbf360c, "A100": 0xff9e80, "A200": 0xff6e40,
+		"A400": 0xff3d00, "A700": 0xdd2c00,
+	}
+	brown = ColorPalette{
+		"50": 0xefebe9, "100": 0xd7ccc8, "200": 0xbcaaa4, "300": 0xa1887f,
+		"400": 0x8d6e63, "500": 0x795548, "600": 0x6d4c41, "700": 0x5d4037,
+		"800": 0x4e342e, "900": 0x3e2723,
+	}
+	grey = ColorPalette{
+		"50": 0xfafafa, "100": 0xf5f5f5, "200": 0xeeeeee, "300": 0xe0e0e0,
+		"400": 0xbdbdbd, "500": 0x9e9e9e, "600": 0x757575, "700": 0x616161,
+		"800": 0x424242, "900": 0x212121,
+	}
+	blueGrey = ColorPalette{
+		"50": 0xeceff1, "100": 0xcfd8dc, "200": 0xb0bec5, "300": 0x90a4ae,
+		"400": 0x78909c, "500": 0x607d8b, "600": 0x546e7a, "700": 0x455a64,
+		"800": 0x37474f, "900": 0x263238,
+	}
+)
 var spectrum = map[string]ColorPalette{
 	"red":    red,
 	"pink":   pink,
@@ -144,7 +140,7 @@ var spectrum = map[string]ColorPalette{
 }
 
 func GetColorsForShade(shade string) (colors []int) {
-	for _, cp := range Spectrum {
+	for _, cp := range spectrum {
 		if hue, ok := cp[shade]; ok {
 			colors = append(colors, hue)
 			sort.Ints(colors)
@@ -154,7 +150,7 @@ func GetColorsForShade(shade string) (colors []int) {
 }
 
 func GetShadesForColorName(color string) (colors []int) {
-	if c, ok := Spectrum[color]; ok {
+	if c, ok := spectrum[color]; ok {
 		for _, cp := range c {
 			colors = append(colors, cp)
 			sort.Ints(colors)