diff --git a/themes/roymuse.zsh-theme b/themes/roymuse.zsh-theme
new file mode 100644
index 000000000..26ad44469
--- /dev/null
+++ b/themes/roymuse.zsh-theme
@@ -0,0 +1,91 @@
+#!/usr/bin/env zsh
+#local return_code="%(?..%{$fg[red]%}%? ↵%{$reset_color%})"
+
+setopt promptsubst
+
+autoload -U add-zsh-hook
+
+PROMPT_SUCCESS_COLOR=$FG[117]
+PROMPT_FAILURE_COLOR=$FG[124]
+PROMPT_VCS_INFO_COLOR=$FG[242]
+PROMPT_PROMPT=$FG[077]
+GIT_DIRTY_COLOR=$FG[133]
+GIT_CLEAN_COLOR=$FG[118]
+GIT_PROMPT_INFO=$FG[012]
+
+PROMPT='%{$PROMPT_SUCCESS_COLOR%}%~%{$reset_color%} %{$GIT_PROMPT_INFO%}$(git_prompt_info)%{$GIT_DIRTY_COLOR%}$(git_prompt_status) %{$reset_color%}%{$PROMPT_PROMPT%}ᐅ%{$reset_color%} '
+RPROMPT='$(git_time_since_commit)'
+
+#RPS1="${return_code}"
+
+ZSH_THEME_GIT_PROMPT_PREFIX="("
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$GIT_PROMPT_INFO%})"
+ZSH_THEME_GIT_PROMPT_DIRTY=" %{$GIT_DIRTY_COLOR%}✘"
+ZSH_THEME_GIT_PROMPT_CLEAN=" %{$GIT_CLEAN_COLOR%}✔"
+
+ZSH_THEME_GIT_PROMPT_ADDED="%{$FG[082]%}✚%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_MODIFIED="%{$FG[166]%}✹%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DELETED="%{$FG[160]%}✖%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_RENAMED="%{$FG[220]%}➜%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_UNMERGED="%{$FG[082]%}═%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$FG[190]%}✭%{$reset_color%}"
+#
+# Colors vary depending on time lapsed.
+ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT="%{$fg[green]%}"
+ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM="%{$fg[yellow]%}"
+ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG="%{$fg[red]%}"
+ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL="%{$fg[cyan]%}"
+# Determine if we are using a gemset.
+function rvm_gemset() {
+    GEMSET=`rvm gemset list | grep '=>' | cut -b4-`
+    if [[ -n $GEMSET ]]; then
+        echo "%{$fg[yellow]%}$GEMSET%{$reset_color%}|"
+    fi 
+
+}
+
+# Determine the time since last commit. If branch is clean,
+# use a neutral color, otherwise colors will vary according to time.
+function git_time_since_commit() {
+    if git rev-parse --git-dir > /dev/null 2>&1; then
+        # Only proceed if there is actually a commit.
+        if [[ $(git log 2>&1 > /dev/null | grep -c "^fatal: bad default revision") == 0 ]]; then
+            # Get the last commit.
+            last_commit=`git log --pretty=format:'%at' -1 2> /dev/null`
+            now=`date +%s`
+            seconds_since_last_commit=$((now-last_commit))
+
+            # Totals
+            MINUTES=$((seconds_since_last_commit / 60))
+            HOURS=$((seconds_since_last_commit/3600))
+           
+            # Sub-hours and sub-minutes
+            DAYS=$((seconds_since_last_commit / 86400))
+            SUB_HOURS=$((HOURS % 24))
+            SUB_MINUTES=$((MINUTES % 60))
+            
+            if [[ -n $(git status -s 2> /dev/null) ]]; then
+                if [ "$MINUTES" -gt 30 ]; then
+                    COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG"
+                elif [ "$MINUTES" -gt 10 ]; then
+                    COLOR="$ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM"
+                else
+                    COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT"
+                fi
+            else
+                COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
+            fi
+
+            if [ "$HOURS" -gt 24 ]; then
+                echo "|$(rvm_gemset)$COLOR${DAYS}d${SUB_HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
+            elif [ "$MINUTES" -gt 60 ]; then
+                echo "|$(rvm_gemset)$COLOR${HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
+            else
+                echo "|$(rvm_gemset)$COLOR${MINUTES}m%{$reset_color%}|"
+            fi
+        else
+            COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
+            echo "|$(rvm_gemset)$COLOR~|"
+        fi
+    fi
+}