diff --git a/spec/power_assert_spec.cr b/spec/power_assert_spec.cr
index 7440609..076cb7e 100644
--- a/spec/power_assert_spec.cr
+++ b/spec/power_assert_spec.cr
@@ -49,7 +49,7 @@ describe Microtest::PowerAssert do
 
     assert reflect(yielding(1) { |x| x }) == CallNode.new(
       %[yielding],
-      %[yielding(1) do |x|\n  x\nend],
+      %[yielding(1) do |x| x end],
       2001,
       EmptyNode.new,
       [TerminalNode.new("1", 1)] of Node,
diff --git a/spec/termart_spec.cr b/spec/termart_spec.cr
index 8fb1370..13e7997 100644
--- a/spec/termart_spec.cr
+++ b/spec/termart_spec.cr
@@ -25,14 +25,14 @@ describe Microtest::Termart do
   test "grouped_lines with color" do
     res = grouped_lines(["A: aaa"], RED, colorize: true)
 
-    assert res == %{\e[38;2;220;0;0m◆\e[0m A: aaa\n}
+    assert res == %{\e[38;2;220;0;0m◆\e[39m A: aaa\n}
 
     res = grouped_lines(["A: aaa", "B: bbb", "C: ccc"], RED, colorize: true)
 
     assert res == <<-STR
-    \e[38;2;220;0;0m┏\e[0m A: aaa
-    \e[38;2;220;0;0m┃\e[0m B: bbb
-    \e[38;2;220;0;0m┗\e[0m C: ccc\n
+    \e[38;2;220;0;0m┏\e[39m A: aaa
+    \e[38;2;220;0;0m┃\e[39m B: bbb
+    \e[38;2;220;0;0m┗\e[39m C: ccc\n
     STR
   end
 end
diff --git a/src/microtest/termart.cr b/src/microtest/termart.cr
index c8a9fd9..aca870c 100644
--- a/src/microtest/termart.cr
+++ b/src/microtest/termart.cr
@@ -36,7 +36,7 @@ module Microtest
 
     private def colorized_io(fg : RGB? = nil, bg : RGB? = nil, m : Colorize::Mode? = nil, &)
       if colorize?
-        c = Colorize.with
+        c = Colorize.with.toggle(true)
         c = c.fore(fg) if fg
         c = c.mode(m) if m
         c = c.back(bg) if bg