Changed GuiRenderSettings to have "Advanced" settings

Added GuiColorPicker and implemented it for Greenscreen color choosing

src/main/java/eu/crushedpixel/replaymod/gui/elements/GuiToggleButton.java

@@ -0,0 +1,38 @@
+package eu.crushedpixel.replaymod.gui.elements;
+
+import net.minecraft.client.gui.GuiButton;
+
+public class GuiToggleButton extends GuiButton {
+
+    private String baseText;
+    private String[] values;
+    private int value;
+
+    public GuiToggleButton(int buttonId, int x, int y, String buttonText, String[] values) {
+        super(buttonId, x, y, buttonText);
+        this.values = values;
+        this.baseText = buttonText;
+        this.value = 0;
+        if(values.length <= 1) {
+            throw new RuntimeException("At least two elements need to be added to a GuiToggleButton");
+        }
+
+        this.displayString = baseText+values[value];
+    }
+
+    public void toggle() {
+        value++;
+        if(value >= values.length) value = 0;
+        this.displayString = baseText+values[value];
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    public void setValue(int value) {
+        this.value = value;
+    }
+
+
+}