set initial block color to None (#726)

tanghaibao · Dec 7, 2024 · bbb9dd9 · bbb9dd9
1 parent e48303c
commit bbb9dd9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/jcvi/graphics/dotplot.py b/jcvi/graphics/dotplot.py
@@ -286,7 +286,7 @@ def dotplot(
         logger.debug("Capping values within [%.1f, %.1f]", vmin, vmax)
 
     block_id = 0
-    block_color = "k"
+    block_color = None
     for row in fp:
         atoms = row.split()
         if row[0] == "#":