diff --git a/apgbpal.go b/apgbpal.go
index 2a30e50..4f1ca4e 100644
--- a/apgbpal.go
+++ b/apgbpal.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"strconv"
 	"strings"
 )
 
@@ -15,11 +16,11 @@ type RGBA struct {
 }
 
 func (c RGBA) Bytes() [4]byte {
-	return [4]byte{c.R, c.G, cB, c.A}
+	return [4]byte{c.R, c.G, c.B, c.A}
 }
 
 func HexByteAt(str string, index int) (byte, error) {
-	if len(string) < index+2 {
+	if len(str) < index+2 {
 		return 0, fmt.Errorf("no hex byte at %d in too short string %q", index, str)
 	}
 	big, err := strconv.ParseUint(str[index:index+1], 16, 8)
@@ -29,7 +30,7 @@ func HexByteAt(str string, index int) (byte, error) {
 	return byte(big), nil
 }
 
-func MustParseRGBA(str string) RGBA {
+func ParseRGBA(str string) RGBA, error {
 	s := strings.TrimSpace(str)
 	s = strings.ToLower(s)
 	s, _ = strings.CutPrefix(s, "#")
@@ -41,20 +42,22 @@ func MustParseRGBA(str string) RGBA {
 		var err error
 		ret.A, err = HexByteAt(s, 6)
 		if err != nil {
-			log.Fatalf("can't parse alpha channel: %v", err)
+			return RGBA{}, fmt.Errorf("can't parse alpha channel: %v", err)
 		}
 	default:
-		log.Fatalf("%q is not an RGBA value: wrong length after trimming", str)
+		return RGBA{}, fmt.Errorf("%q is not an RGBA value: wrong length after trimming", str)
 	}
-	if ret.R, err := HexByteAt(s, 0); err != nil {
-		log.Fatalf("can't parse red channel: %v", err)
+	var err error
+	if ret.R, err = HexByteAt(s, 0); err != nil {
+		return RGBA{}, fmt.Errorf("can't parse red channel: %v", err)
 	}
-	if ret.G, err := HexByteAt(s, 2); err != nil {
-		log.Fatalf("can't parse green channel: %v", err)
+	if ret.G, err = HexByteAt(s, 2); err != nil {
+		return RGBA{}, fmt.Errorf("can't parse green channel: %v", err)
 	}
-	if ret.B, err := HexByteAt(s, 4); err != nil {
-		log.Fatalf("can't parse blue channel: %v", err)
+	if ret.B, err = HexByteAt(s, 4); err != nil {
+		return RGBA{}, fmt.Errorf("can't parse blue channel: %v", err)
 	}
+	return ret, nil
 }
 
 type BGPal [4]RGBA
@@ -80,7 +83,7 @@ func MustParseBGPal(strs []string) BGPal {
 	}
 	var ret BGPal
 	for i := 0; i < 4; i++ {
-		ret[i], err := MustParseRGBA(strs[i])
+		ret[i], err := ParseRGBA(strs[i])
 		if err != nil {
 			log.Fatalf("MustParseBGPal can't parse at %d: %v", i, err)
 		}
@@ -109,7 +112,7 @@ func (o OBJPal) Bytes(indexchar byte) [18]byte {
 
 func MustParseOBJPal(strs []string) OBJPal {
 	if len(strs) == 4 {
-		log.Info("Discarding index 0 of OBJ pal")
+		log.Println("Discarding index 0 of OBJ pal")
 		strs = strs[1:]
 	}
 	if len(strs) != 3 {
@@ -117,7 +120,7 @@ func MustParseOBJPal(strs []string) OBJPal {
 	}
 	var ret OBJPal
 	for i := 0; i < 3; i++ {
-		ret[i], err := MustParseRGBA(strs[i])
+		ret[i], err := ParseRGBA(strs[i])
 		if err != nil {
 			log.Fatalf("MustParseOBJPal can't parse at %d: %v", i, err)
 		}