diff --git a/physics/pdf/radiazione_em.pdf b/physics/pdf/radiazione_em.pdf
index 38769fe..cd4c36b 100644
Binary files a/physics/pdf/radiazione_em.pdf and b/physics/pdf/radiazione_em.pdf differ
diff --git a/physics/radiazione_em.tex b/physics/radiazione_em.tex
index eb28ff8..35c34b7 100755
--- a/physics/radiazione_em.tex
+++ b/physics/radiazione_em.tex
@@ -9,7 +9,7 @@
 \usepackage{xcolor}
 \usepackage{tkz-euclide}
 %
-\definecolor{space}{HTML}{0A2543}
+\definecolor{space}{HTML}{1F2C4E}
 %
 \usepackage{mathptmx}
 \usepackage{fontspec}