diff --git a/.gitignore b/.gitignore
index 108e0cc..a8f28db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,4 +13,10 @@
 
 # Maven
 log/
-target/
\ No newline at end of file
+target/
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build
+log4j/
diff --git a/LinearRegressionTool/src/main/java/de/wwwu/awolf/presenter/util/GuiAppender.java b/LinearRegressionTool/src/main/java/de/wwwu/awolf/presenter/util/GuiAppender.java
deleted file mode 100644
index 9bfdda0..0000000
--- a/LinearRegressionTool/src/main/java/de/wwwu/awolf/presenter/util/GuiAppender.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package de.wwwu.awolf.presenter.util;
-
-import de.wwwu.awolf.presenter.Presenter;
-import org.apache.log4j.AppenderSkeleton;
-import org.apache.log4j.spi.LoggingEvent;
-import org.powermock.core.classloader.annotations.PowerMockIgnore;
-
-@PowerMockIgnore("org.apache.log4j.Appender")
-public class GuiAppender extends AppenderSkeleton {
-
-    private Presenter presenter;
-
-    public GuiAppender() {
-        super();
-
-        Presenter tmpInstance = Presenter.getInstance();
-        while (tmpInstance == null) {
-            try {
-                Thread.sleep(1000);
-                tmpInstance = Presenter.getInstance();
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-        }
-
-        presenter = Presenter.getInstance();
-    }
-
-    public GuiAppender(boolean isActive) {
-        super(isActive);
-    }
-
-    /**
-     * [DEBUG] 2020-03-27 23:58:40 [Thread-3] - View has been set.
-     *
-     *
-     * @param logEvent
-     */
-    @Override
-    protected void append(LoggingEvent logEvent) {
-        if (presenter != null && presenter.getView() != null) {
-            presenter.getView().logInfo("[" + logEvent.getLevel() + "] " + logEvent.getThreadName() + ": " + logEvent.getRenderedMessage());
-        }
-    }
-
-    @Override
-    public void close() {
-
-    }
-
-    @Override
-    public boolean requiresLayout() {
-        return true;
-    }
-
-}
diff --git a/LinearRegressionTool/src/main/resources/style/console.css b/LinearRegressionTool/src/main/resources/style/console.css
deleted file mode 100644
index ec7d24e..0000000
--- a/LinearRegressionTool/src/main/resources/style/console.css
+++ /dev/null
@@ -1,10 +0,0 @@
-.text-area {
-    -fx-font-family: Consolas;
-    -fx-font-size: 15;
-    -fx-text-fill: #63f542;
-    -fx-display-caret:true;
-}
-
-.text-area .content {
-    -fx-background-color: #000000;
-}
\ No newline at end of file
diff --git a/LinearRegressionTool/src/main/resources/style/style.css b/LinearRegressionTool/src/main/resources/style/style.css
new file mode 100644
index 0000000..06c19e9
--- /dev/null
+++ b/LinearRegressionTool/src/main/resources/style/style.css
@@ -0,0 +1,340 @@
+
+/**
+ * JavaFX CSS Brume, light grey/white theme.
+ */
+.root {
+    -fx-background-color: derive(#1d1d1d,20%);
+}
+
+
+.titled-pane {
+    -fx-effect: dropshadow(three-pass-box, #9F9F9F, 15, 0, 0, 0);
+    -fx-animated: true;
+    -fx-text-fill: #505050;
+}
+
+.titled-pane .title  {
+    -fx-background-radius: 0, 0, 0;
+    -fx-font: bold 14px System;
+    -fx-padding: 0.3em 0.833333em 0.35em 0.833333em;
+
+    /* stop the background from being blue on focus */
+    -fx-background-color: ladder(
+            red,
+            black 20%,
+            derive(#d0d0d0,-30%) 30%
+        ),
+        linear-gradient(
+        to bottom,
+            ladder(#d0d0d0,
+                derive(#d0d0d0,80%) 60%,
+                white 82%) 0%,
+            ladder(#d0d0d0,
+                derive(#d0d0d0,20%) 10%,
+                derive(#d0d0d0,-10%) 80%) 100%
+        ), linear-gradient(
+            to bottom,
+            derive(#d0d0d0,34%) 0%,
+            derive(#d0d0d0,-18%) 100%
+        );
+}
+
+.titled-pane:focused > .title > .arrow-button .arrow {
+    /* do not highlight the title pane arrow on focus */
+    -fx-background-color: #606060;
+}
+
+.tree-cell:odd {
+    /* shade every other line in a tree view */
+    -fx-background-color: derive(-fx-control-inner-background,-5%);
+}
+
+/* the previous css to shade every other cell overrides the selection
+   colour, so put it back for odd cells */
+.tree-view:focused .tree-cell:filled:focused:selected:odd{
+    -fx-background-color: -fx-focus-color, -fx-cell-focus-inner-border, -fx-selection-bar;
+}
+
+/*  if you have labels within your tree nodes, then make the text light so
+    that it stands out from the selection colour. */
+.tree-view:focused .tree-cell:filled:focused:selected:odd .label {
+    -fx-text-fill: -fx-light-text-color;
+}
+.tree-view:focused .tree-cell:filled:focused:selected:even .label {
+    -fx-text-fill: -fx-light-text-color;
+}
+
+.button {
+    /* buttons do not have rounded corners */
+    -fx-background-radius: 0;
+    -fx-label-padding: 0.3em 0.833333em 0.35em 0.833333em;
+}
+
+.menu-button {
+    /* the left side of the menu button is not rounded */
+}
+
+.menu-button .label {
+    -fx-label-padding: 0.23em 0.2em 0.24em 0.2em;
+}
+
+.combo-box-base  {
+    /* the left side of the combo box is not rounded */
+    -fx-background-radius: 0 5 5 0, 0 5 5 0, 0 4 4 0, 0 3 3 0;
+}
+
+.combo-box .list-cell {
+     /* -fx-padding: 6 6 6 6; */
+}
+
+/* make the tooltip a slightly transparent black rectange with white text */
+.tooltip {
+    -fx-background-color: black;
+	-fx-opacity: 0.6;
+    -fx-background-insets: 0,1,2;
+    -fx-background-radius: 0;
+    -fx-padding: 0.333333em 0.666667em 0.333333em 0.666667em; /* 4 8 4 8 */
+	-fx-wrap-text:false;
+}
+.tooltip .label {
+	-fx-text-fill: white;
+}
+/* remove the turned page effect */
+.page-corner {
+    -fx-padding: 0;
+    -fx-background-color: null;
+    -fx-shape: null;
+    -fx-effect: null;
+}
+
+.toggle-button {
+    -fx-background-radius: 0;
+    -fx-label-padding: 0.3em 0.833333em 0.35em 0.833333em;
+}
+.check-box {
+    -fx-background-radius: 0;
+}
+
+.choice-box {
+	/* TODO add padding */
+    -fx-background-radius: 0;
+}
+/* Dark */
+.background {
+    -fx-background-color: derive(#1d1d1d,20%);
+}
+
+.label {
+    -fx-font-size: 11pt;
+    -fx-font-family: "Segoe UI Semibold";
+    -fx-text-fill: white;
+    -fx-opacity: 0.6;
+}
+
+.label-bright {
+    -fx-font-size: 11pt;
+    -fx-font-family: "Segoe UI Semibold";
+    -fx-text-fill: white;
+    -fx-opacity: 1;
+}
+
+.label-header {
+    -fx-font-size: 32pt;
+    -fx-font-family: "Segoe UI Light";
+    -fx-text-fill: white;
+    -fx-opacity: 1;
+}
+
+.table-view {
+    -fx-base: #1d1d1d;
+    -fx-control-inner-background: #1d1d1d;
+    -fx-background-color: #1d1d1d;
+    -fx-table-cell-border-color: transparent;
+    -fx-table-header-border-color: transparent;
+    -fx-padding: 5;
+}
+
+.table-view .column-header-background {
+    -fx-background-color: transparent;
+}
+
+.table-view .column-header, .table-view .filler {
+    -fx-size: 35;
+    -fx-border-width: 0 0 1 0;
+    -fx-background-color: transparent;
+    -fx-border-color:
+        transparent
+        transparent
+        derive(-fx-base, 80%)
+        transparent;
+    -fx-border-insets: 0 10 1 0;
+}
+
+.table-view .column-header .label {
+    -fx-font-size: 20pt;
+    -fx-font-family: "Segoe UI Light";
+    -fx-text-fill: white;
+    -fx-alignment: center-left;
+    -fx-opacity: 1;
+}
+
+.table-view:focused .table-row-cell:filled:focused:selected {
+    -fx-background-color: -fx-focus-color;
+}
+
+.split-pane:horizontal > .split-pane-divider {
+    -fx-border-color: transparent #1d1d1d transparent #1d1d1d;
+    -fx-background-color: transparent, derive(#1d1d1d,20%);
+}
+
+.split-pane {
+    -fx-padding: 1 0 0 0;
+}
+
+.menu-bar {
+    -fx-background-color: derive(#1d1d1d,20%);
+}
+
+.context-menu {
+    -fx-background-color: derive(#1d1d1d,50%);
+}
+
+.menu-bar .label {
+    -fx-font-size: 14pt;
+    -fx-font-family: "Segoe UI Light";
+    -fx-text-fill: white;
+    -fx-opacity: 0.9;
+}
+
+.menu .left-container {
+    -fx-background-color: black;
+}
+
+.text-field {
+    -fx-font-size: 12pt;
+    -fx-font-family: "Segoe UI Semibold";
+}
+
+
+/*
+ * Metro style Push Button
+ * Author: Pedro Duque Vieira
+ * http://pixelduke.wordpress.com/2012/10/23/jmetro-windows-8-controls-on-java/
+ */
+.button {
+    -fx-padding: 5 22 5 22;
+    -fx-border-color: #e2e2e2;
+    -fx-border-width: 2;
+    -fx-background-radius: 0;
+    -fx-background-color: #1d1d1d;
+    -fx-font-family: "Segoe UI", Helvetica, Arial, sans-serif;
+    -fx-font-size: 11pt;
+    -fx-text-fill: #d8d8d8;
+    -fx-background-insets: 0 0 0 0, 0, 1, 2;
+}
+
+.button:hover {
+    -fx-background-color: #3a3a3a;
+}
+
+.button:pressed, .button:default:hover:pressed {
+  -fx-background-color: white;
+  -fx-text-fill: #1d1d1d;
+}
+
+.button:focused {
+    -fx-border-color: white, white;
+    -fx-border-width: 1, 1;
+    -fx-border-style: solid, segments(1, 1);
+    -fx-border-radius: 0, 0;
+    -fx-border-insets: 1 1 1 1, 0;
+}
+
+.button:disabled, .button:default:disabled {
+    -fx-opacity: 0.4;
+    -fx-background-color: #1d1d1d;
+    -fx-text-fill: white;
+}
+
+.button:default {
+    -fx-background-color: -fx-focus-color;
+    -fx-text-fill: #ffffff;
+}
+
+.button:default:hover {
+    -fx-background-color: derive(-fx-focus-color,30%);
+}
+/* Console */
+.text-area {
+    -fx-font-family: Consolas;
+    -fx-font-size: 15;
+    -fx-text-fill: #63f542;
+    -fx-display-caret:true;
+}
+
+.text-area .content {
+    -fx-background-color: #000000;
+}
+
+/* tabs */
+.tab-pane:top *.tab-header-area {
+    -fx-background-insets: 0, 0 0 1 0;
+ /* -fx-padding: 0.416667em 0.166667em 0.0em 0.833em; /* 5 2 0 10 */
+    -fx-padding: 0.416667em 0.166667em 0.0em 0.0em; /* overridden as 5 2 0 0 */
+}
+
+.tab-pane .tab-header-area .tab-header-background {
+    -fx-opacity: 0;
+}
+
+.tab-pane {
+    -fx-tab-min-width:120px;
+    -fx-tab-min-height:50px;
+    -fx-tab-max-height:50px;
+}
+
+.tab-pane .tab {
+    -fx-background-color: derive(#1d1d1d,20%);
+    -fx-background-insets: 0 1 0 1,0,0;
+    -fx-label-padding: 0.25em 0.25em 0.25em 0.25em;
+}
+
+.tab .tab-label {
+    -fx-font-size: 14pt;
+    -fx-font-family: "Segoe UI Light";
+    -fx-text-fill: white;
+    -fx-opacity: 0.9;
+    -fx-display-caret:true;
+}
+
+.tab-pane .tab:selected {
+    -fx-background-color: -fx-focus-color;
+}
+
+.algoPane {
+    -fx-background-color: white;
+}
+
+.algoPane .label {
+    -fx-text-fill: black;
+    -fx-font-size: 16pt;
+    -fx-font-family: "Segoe UI Light";
+    -fx-opacity: 0.9;
+}
+
+.default-color0.chart-series-line { -fx-stroke: transparent; }
+.default-color1.chart-series-line { -fx-stroke: red; }
+
+.default-color0.chart-line-symbol {
+    -fx-background-color: white, green;
+}
+.default-color1.chart-line-symbol {
+    -fx-background-color: transparent, transparent;
+}
+
+.default-color0.chart-legend-item-symbol{
+    -fx-background-color: green;
+ }
+.default-color1.chart-legend-item-symbol{
+    -fx-background-color: red;
+ }
\ No newline at end of file