diff --git a/Graphics/frontend/+caustic1.bmp b/Graphics/frontend/+caustic1.bmp new file mode 100644 index 000000000..0feac61f1 Binary files /dev/null and b/Graphics/frontend/+caustic1.bmp differ diff --git a/Graphics/frontend/+caustic2.bmp b/Graphics/frontend/+caustic2.bmp new file mode 100644 index 000000000..bdcda89fb Binary files /dev/null and b/Graphics/frontend/+caustic2.bmp differ