diff --git a/docs/G100-G200.txt b/docs/G100-G200.txt
index dc52b9b..db76be5 100644
--- a/docs/G100-G200.txt
+++ b/docs/G100-G200.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G139-239.txt b/docs/G139-239.txt
index d692e57..77285d2 100644
--- a/docs/G139-239.txt
+++ b/docs/G139-239.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G300.txt b/docs/G300.txt
index aef4cf3..030feb2 100644
--- a/docs/G300.txt
+++ b/docs/G300.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G302.txt b/docs/G302.txt
index ad4b203..a13614c 100644
--- a/docs/G302.txt
+++ b/docs/G302.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G306.txt b/docs/G306.txt
index 275888b..3df93dd 100644
--- a/docs/G306.txt
+++ b/docs/G306.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G400.txt b/docs/G400.txt
index a16d420..2c65804 100644
--- a/docs/G400.txt
+++ b/docs/G400.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G402.txt b/docs/G402.txt
index e4d1f3b..2c4c23b 100644
--- a/docs/G402.txt
+++ b/docs/G402.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]
diff --git a/docs/G439.txt b/docs/G439.txt
index b4e9ae4..220dc32 100644
--- a/docs/G439.txt
+++ b/docs/G439.txt
@@ -219,12 +219,12 @@
 		"title": "    背景色彩浮动范围",
 		"desc": "与背景底色偏差在该值范围内的颜色，都将被移除",
 		"type": "int",
-		"cur": 20,
-		"default": 20,
+		"cur": 80,
+		"default": 80,
 		"size": 4,
 		"range": {
 			"min": 1,
-			"max": 128,
+			"max": 255,
 			"step": 1
 		},
 		"depend_or": ["is-erase-bkg==true"]