diff -r 08dc62e03a6d -r c6114b3af3a6 src/gl/partrenderer.cpp
--- a/src/gl/partrenderer.cpp	Sun Feb 02 00:50:57 2020 +0200
+++ b/src/gl/partrenderer.cpp	Sun Feb 02 00:51:06 2020 +0200
@@ -54,7 +54,6 @@
 	this->modelQuaternion = glm::angleAxis(glm::radians(30.0f), glm::vec3{-1, 0, 0});
 	this->modelQuaternion *= glm::angleAxis(glm::radians(225.0f), glm::vec3{-0, 1, 0});
 	this->updateViewMatrix();
-	glLineWidth(2.0);
 	this->update();
 }
 
@@ -110,6 +109,7 @@
 	glEnable(GL_DEPTH_TEST);
 	glEnable(GL_POLYGON_OFFSET_FILL);
 	glPolygonOffset(1.0f, 1.0f);
+	glLineWidth(this->renderPreferences.lineThickness);
 	switch (this->renderPreferences.style)
 	{
 	case gl::RenderStyle::Normal:
@@ -232,8 +232,9 @@
 void PartRenderer::setRenderPreferences(const gl::RenderPreferences& newPreferences)
 {
 	bool mainColorChanged = this->renderPreferences.mainColor != newPreferences.mainColor;
+	bool backgroundColorChanged = this->renderPreferences.backgroundColor != newPreferences.backgroundColor;
 	this->renderPreferences = newPreferences;
-	if (mainColorChanged)
+	if (mainColorChanged or backgroundColorChanged)
 	{
 		this->compiler->build(this->model, this->documents, this->renderPreferences);
 	}