diff --git a/client/src/main/resources/css/app-light.css b/client/src/main/resources/css/app-light.css
index 2a4b785..17bdbdf 100644
--- a/client/src/main/resources/css/app-light.css
+++ b/client/src/main/resources/css/app-light.css
@@ -381,7 +381,7 @@
 }
 
 .jfx-tab-pane .headers-region .tab .tab-container .tab-close-button:hover {
-    -fx-background-color: derive(-fx-text-color, -20%)
+    -fx-background-color: derive(-fx-text-color, 20%)
 
 }
 
@@ -390,11 +390,11 @@
 }
 
 .jfx-tab-pane .headers-region .tab:hover .tab-container .tab-close-button > .jfx-svg-glyph {
-    -fx-background-color: derive(-fx-text-color, -30%);
+    -fx-background-color: derive(-fx-text-color, 30%);
 }
 
 .jfx-tab-pane .headers-region .tab .tab-container .jfx-svg-glyph {
-    -fx-background-color: derive(-fx-text-color, -20%);
+    -fx-background-color: derive(-fx-text-color, 20%);
     -jfx-size: 20;
 }
 
diff --git a/client/src/main/resources/images/folder/group.png b/client/src/main/resources/images/folder/group.png
deleted file mode 100644
index c5a90a8..0000000
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diff --git a/client/src/main/resources/images/folder/grouptype.png b/client/src/main/resources/images/folder/grouptype.png
deleted file mode 100644
index 4fb7d6c..0000000
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diff --git a/client/src/main/resources/images/folder/home.png b/client/src/main/resources/images/folder/home.png
deleted file mode 100644
index 9c6d48b..0000000
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diff --git a/client/src/main/resources/images/folder/loding1.png b/client/src/main/resources/images/folder/loding1.png
deleted file mode 100644
index 9c7c3ad..0000000
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diff --git a/client/src/main/resources/images/folder/login.png b/client/src/main/resources/images/folder/login.png
deleted file mode 100644
index 4e4884a..0000000
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diff --git a/client/src/main/resources/images/folder/menu.png b/client/src/main/resources/images/folder/menu.png
deleted file mode 100644
index 229e35b..0000000
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diff --git a/client/src/main/resources/images/folder/registered.png b/client/src/main/resources/images/folder/registered.png
deleted file mode 100644
index 0662b49..0000000
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diff --git a/client/src/main/resources/images/folder/user.png b/client/src/main/resources/images/folder/user.png
deleted file mode 100644
index 4915bf1..0000000
Binary files a/client/src/main/resources/images/folder/user.png and /dev/null differ
diff --git a/readme/group-dark.png b/readme/group-dark.png
new file mode 100644
index 0000000..ad362e6
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diff --git a/readme/group-light.png b/readme/group-light.png
new file mode 100644
index 0000000..a3dfdc1
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diff --git a/readme/grouptype-dark.png b/readme/grouptype-dark.png
new file mode 100644
index 0000000..216ebe4
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diff --git a/readme/grouptype-light.png b/readme/grouptype-light.png
new file mode 100644
index 0000000..10fcd02
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diff --git a/readme/home-dark.png b/readme/home-dark.png
new file mode 100644
index 0000000..e4c9c63
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diff --git a/readme/home-light.png b/readme/home-light.png
new file mode 100644
index 0000000..c6f1988
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diff --git a/readme/menu-dark.png b/readme/menu-dark.png
new file mode 100644
index 0000000..fcf54ce
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diff --git a/readme/menu-light.png b/readme/menu-light.png
new file mode 100644
index 0000000..79fccf1
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diff --git a/readme/user-dark.png b/readme/user-dark.png
new file mode 100644
index 0000000..3a0e599
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diff --git a/readme/user-light.png b/readme/user-light.png
new file mode 100644
index 0000000..820c841
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