diff --git a/custom/colors.el b/custom/colors.el
new file mode 100644
index 0000000..b4ac121
--- /dev/null
+++ b/custom/colors.el
@@ -0,0 +1,7 @@
+(defun cardimgs (start end)
+  "Insert HTML string for card images"
+  (interactive "r")
+  (setq original (buffer-substring (region-beginning) (region-end)))
+  (delete-region start end)
+  (setq imgs (replace-regexp-in-string ", " ".gif\"><img src=\"https://colors-tcg.eu/cards/" original))
+  (insert (concat "<img src=\"https://colors-tcg.eu/cards/" imgs ".gif\">")))