diff --git a/readme.md b/readme.md
index af2c6ad..c465ace 100644
--- a/readme.md
+++ b/readme.md
@@ -8,13 +8,15 @@ gitea is setup as a sevice as described in `https://docs.gitea.io/en-us/install-
 ## Adding as new theme
 
 ### Prepare
-Create /public/css/ in the custom directory for gitea (default: /var/lib/gitea/custom/)
+* Create /public/css/ in the custom directory for gitea (default: /var/lib/gitea/custom/)
 ```
 mkdir -p /var/lib/gitea/custom/public/css/ /opt/gitea_blue-theme
 ```
-Remove old custom css/js
-rm -rf /opt/gitea_blue-theme/custom_public_bin/js
-rm -rf /opt/gitea_blue-theme/custom_public_bin/css
+* Remove old custom css/js
+```
+mv /opt/gitea_blue-theme/custom_public_bin/js /opt/gitea_blue-theme/custom_public_bin/js.old
+mv /opt/gitea_blue-theme/custom_public_bin/css /opt/gitea_blue-theme/custom_public_bin/css.old
+```
 
 ### Install 
 * Download the repo to the opt directory
@@ -51,6 +53,10 @@ mkdir -p /var/lib/gitea/custom/public/css/
 ```
 
 ### Install 
+* cleanup if old version was installed
+```
+mv /var/lib/gitea/custom/public/css/theme-arc-green.css /var/lib/gitea/custom/public/css/theme-arc-green.css.old
+```
 * Download the blue theme to the custom directory
 ```
 wget https://git.bprieshof.nl/DarkTheme/Gitea-Arc_blue-Theme/custom_public_bin/css/theme-arc-blue.css -O /var/lib/gitea/custom/public/css/theme-arc-green.css