diff --git a/astronomy/pdf/spacetime_deformation.pdf b/astronomy/pdf/spacetime_deformation.pdf
index 2927dd1..5256bc9 100644
Binary files a/astronomy/pdf/spacetime_deformation.pdf and b/astronomy/pdf/spacetime_deformation.pdf differ
diff --git a/astronomy/spacetime_deformation.tex b/astronomy/spacetime_deformation.tex
index 6e948bc..14acfbf 100644
--- a/astronomy/spacetime_deformation.tex
+++ b/astronomy/spacetime_deformation.tex
@@ -3,7 +3,7 @@
 \usepackage{tikz}
 \usetikzlibrary{backgrounds}
 \usepackage{xcolor}
-\definecolor{space}{HTML}{0A2543}
+\definecolor{space}{HTML}{1F2C4E}
 %
 \title{Black hole's Flamm paraboloid}
 \begin{document}