diff --git a/f256lib/file.c b/f256lib/file.c
index b3bcd1e..c7557d7 100644
--- a/f256lib/file.c
+++ b/f256lib/file.c
@@ -182,11 +182,11 @@ int16_t fileRead(void *buf, uint16_t nbytes, uint16_t nmemb, uint8_t *fd) {
 
 	while (gathered < bytes) {
 		returned = kernelRead(*fd, data + gathered, bytes - gathered);
-		if (returned <= 0) break;
+		if (returned <= 0) return -1;
 		gathered += returned;
 	}
 
-	return gathered;
+	return nmemb;
 }
 
 
@@ -382,7 +382,7 @@ int16_t fileWrite(void *buf, uint16_t nbytes, uint16_t nmemb, uint8_t *fd) {
 		bytes -= written;
 	}
 
-	return total;
+	return nmemb;
 }
 
 
diff --git a/f256lib/text.c b/f256lib/text.c
index a27a8b3..f382a0d 100644
--- a/f256lib/text.c
+++ b/f256lib/text.c
@@ -74,21 +74,30 @@ void textClear(void) {
 }
 
 
-// Define text color.
-void textDefineColor(byte slot, byte fr, byte fg, byte fb, byte br, byte bg, byte bb) {
+void textDefineBackgroundColor(byte slot, byte r, byte g, byte b) {
+	byte *write;
+
+	write = (byte *)VKY_TXT_BGLUT + mathUnsignedMultiply(slot, 4);
+	*write++ = b;
+	*write++ = g;
+	*write++ = r;
+	*write++ = 0xff;
+}
+
+
+void textDefineForegroundColor(byte slot, byte r, byte g, byte b) {
 	byte *write;
 
 	write = (byte *)VKY_TXT_FGLUT + mathUnsignedMultiply(slot, 4);
-	*write++ = fb;
-	*write++ = fg;
-	*write++ = fr;
+	*write++ = b;
+	*write++ = g;
+	*write++ = r;
 	*write++ = 0xff;
+}
 
-	write = (byte *)VKY_TXT_BGLUT + mathUnsignedMultiply(slot, 4);
-	*write++ = bb;
-	*write++ = bg;
-	*write++ = br;
-	*write++ = 0xff;
+
+void textEnableBackgroundColors(bool b) {
+	POKE(VKY_MSTR_CTRL_1, (PEEK(VKY_MSTR_CTRL_1) & 0xef) | (b << 4));
 }
 
 
@@ -210,14 +219,10 @@ void textReset(void) {
 	textSetCursor(0);
 
 	// Set up default text colors.
-	for (x=0; x<TEXTCOLORS_COUNT; x++)
-		textDefineColor(x,
-						textColors[x].r,
-						textColors[x].g,
-						textColors[x].b,
-						textColors[x].r,
-						textColors[x].g,
-						textColors[x].b);
+	for (x=0; x<TEXTCOLORS_COUNT; x++) {
+		textDefineForegroundColor(x, textColors[x].r, textColors[x].g, textColors[x].b);
+		textDefineBackgroundColor(x, textColors[x].r, textColors[x].g, textColors[x].b);
+	}
 
 	textClear();
 }
diff --git a/f256lib/text.h b/f256lib/text.h
index 05f8ca2..7c0ca80 100644
--- a/f256lib/text.h
+++ b/f256lib/text.h
@@ -62,7 +62,9 @@ extern colorT textColors[16];
 void __putchar(char c);  // Allows printf().
 
 void textClear(void);
-void textDefineColor(byte slot, byte fr, byte fg, byte fb, byte br, byte bg, byte bb);
+void textDefineBackgroundColor(byte slot, byte r, byte g, byte b);
+void textDefineForegroundColor(byte slot, byte r, byte g, byte b);
+void textEnableBackgroundColors(bool b);
 void textGetXY(byte *x, byte *y);
 void textGotoXY(byte x, byte y);
 void textPrint(char *message);