diff --git a/lib/scripts/legacy_lyxpreview2ppm.py b/lib/scripts/legacy_lyxpreview2ppm.py
index 6be99d360e..eceead324d 100644
--- a/lib/scripts/legacy_lyxpreview2ppm.py
+++ b/lib/scripts/legacy_lyxpreview2ppm.py
@@ -234,10 +234,8 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
                 tmp.write(b"""
 \\usepackage{color}
 \\definecolor{lyxfg}{rgb}{%s}
-\\definecolor{lyxbg}{rgb}{%s}
-\\pagecolor{lyxbg}
 \\usepackage{polyglossia}
-""" % (fg_color_gr, bg_color_gr))
+""" % (fg_color_gr))
                 polyglossia = True
                 continue
         success = 1
@@ -247,22 +245,20 @@ def legacy_latex_file(latex_file, fg_color, bg_color):
             tmp.write(b"""
 \\usepackage{color}
 \\definecolor{lyxfg}{rgb}{%s}
-\\definecolor{lyxbg}{rgb}{%s}
-\\pagecolor{lyxbg}
 \\makeatletter
 \\def\\@tempa{cmr}
 \\ifx\\f@family\\@tempa
   \\IfFileExists{lmodern.sty}{\\usepackage{lmodern}}{\\usepackage{ae,aecompl}}
 \\fi
-""" % (fg_color_gr, bg_color_gr))
+""" % (fg_color_gr))
         tmp.write(b"""
 \\usepackage[%s,tightpage]{preview}
 \\makeatletter
 \\ifdefined\\AddToHook
-  \\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\color{lyxbg}\\special{background \\current@color}\\special{ps::clippath fill}}
+  \\AddToHook{env/preview/before}{\\leavevmode\\begingroup\\special{ps::clippath fill}}
   \\AddToHook{env/preview/after}{\\endgroup}
 \\else
-  \\g@addto@macro\\preview{\\leavevmode\\begingroup\\color{lyxbg}\\special{background \\current@color}\\special{ps::clippath fill}}
+  \\g@addto@macro\\preview{\\leavevmode\\begingroup\\special{ps::clippath fill}}
   \\g@addto@macro\\endpreview{\\endgroup}
 \\fi
 \\g@addto@macro\\preview{\\color{lyxfg}}
diff --git a/lib/scripts/lyxpreview2bitmap.py b/lib/scripts/lyxpreview2bitmap.py
index 56314356d1..1542af1663 100755
--- a/lib/scripts/lyxpreview2bitmap.py
+++ b/lib/scripts/lyxpreview2bitmap.py
@@ -393,7 +393,7 @@ def main(argv):
     bg_color = bytes(bg_color, 'ascii')
 
     fg_color_dvipng = make_texcolor(fg_color, False).decode('ascii')
-    bg_color_dvipng = make_texcolor(bg_color, False).decode('ascii')
+    bg_color_dvipng = "Transparent"
 
     # External programs used by the script.
     latex = find_exe_or_terminate(latex or latex_commands)