diff --git a/modules/Grid/Grid.cpp b/modules/Grid/Grid.cpp
index dad75d1..74956cb 100644
--- a/modules/Grid/Grid.cpp
+++ b/modules/Grid/Grid.cpp
@@ -3,6 +3,7 @@
 #include <libscnumerics.hpp>
 #include <vector>
 #include <cmath>
+#include <string>
 
 // rectangles have width between 2 and 50 pixels
 // rectangles have color black, white, or sand
@@ -12,10 +13,10 @@
 // screensize therefore determines grid, which should be centered
 // after some time, a new random setup is chosen, and we animate to the new situation
 
-const RGB black {0, 0, 0};
-const RGB white {1, 1, 1};
-const RGB sand {182.0 / 256.0, 144.0 / 256.0, 97.0 / 256.0};
-const RGB pastel_green {177.0 / 256.0, 209.0 / 256.0, 175.0 / 256.0};
+const std::string black {"#000000"};
+const std::string white {"#FFFFFF"};
+const std::string sand {"#B69061"};
+const std::string pastel_green {"#B1D1AF"};
 
 struct Rect {
     double cx {0};
@@ -103,6 +104,10 @@ void Grid::configure() {
     _fade = _j["fade"];
     _border = _j["border"];
     _new.bg = Color {_j["bg"]};
+    _colors.clear();
+    for (const auto& hex : _j["colors"]) {
+        _colors.emplace_back(hex);
+    }
 }
 
 int Grid::fps() const {