Add custom combobox style

PlayWall/src/main/resources/style/components/combobox.css

+.combo-box {
+	-fx-background-color: #5c5c5c;
+	-fx-background-radius: 3px;
+}
+
+.combo-box > .list-cell {
+	-fx-font-weight: bold;
+}
+
+.combo-box .list-cell {
+	-fx-background-color: #333333;
+	-fx-text-fill: efefef;
+	-fx-pref-height: 30px;
+}
+
+.combo-box .list-cell:hover {
+	-fx-background-color: #878787;
+}
+
+.combo-box .list-cell:selected {
+	-fx-background-color: #358dab;
+}
+
+.combo-box > .list-cell:selected {
+	-fx-background-color: #5c5c5c;
+}
+
+.combo-box:editable .arrow-button {
+	-fx-background-color: #5c5c5c;
+}
+
+.combo-box .text-input {
+	-fx-border-color: #CCCCCC;
+	-fx-border-width: 1px;
+	-fx-border-radius: 2px;
+	-fx-background-color: transparent;
+	-fx-text-fill: white;
+	-fx-font-size: 14;
+	-fx-prompt-text-fill: #777777;
+}
\ No newline at end of file

PlayWall/src/main/resources/style/components/textfield.css

-
 .text-field {
 	-fx-border-color: #CCCCCC;
 	-fx-border-width: 1px;

PlayWall/src/main/scala/de/tobias/playpad/design/ModernGlobalDesignHandlerImpl.scala

@@ -27,6 +27,7 @@ class ModernGlobalDesignHandlerImpl extends ModernGlobalDesignHandler with Color
 
 	val styleSheets: Array[String] = Array(
 		"style/components/button.css",
+		"style/components/combobox.css",
 		"style/components/checkbox.css",
 		"style/components/scrollbar.css",
 		"style/components/textfield.css",