Added time since last commit to Soliah theme and changed some colours.

themes/Soliah.zsh-theme

-PROMPT='%{$fg[blue]%}%B%20~%b%{$reset_color%}%{$(git_prompt_info)%} $ '
+PROMPT='%{$fg[blue]%}%n%{$reset_color%} on %{$fg[red]%}%M%{$reset_color%} in %{$fg[blue]%}%~%b%{$reset_color%}$(git_time_since_commit)$(git_prompt_info)
+$ '
 
-ZSH_THEME_GIT_PROMPT_PREFIX="(%{$fg[green]%}"
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[white]%}"
 ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%})"
-ZSH_THEME_GIT_PROMPT_DIRTY="*%{$reset_color%}"
 
+# Text to display if the branch is dirty
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}*%{$reset_color%}" 
+
+# Text to display if the branch is clean
+ZSH_THEME_GIT_PROMPT_CLEAN="" 
+
+# 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 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 "($COLOR${DAYS}d${SUB_HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
+            elif [ "$MINUTES" -gt 60 ]; then
+                echo "($COLOR${HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
+            else
+                echo "($COLOR${MINUTES}m%{$reset_color%}|"
+            fi
+        else
+            COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
+            echo "($COLOR~|"
+        fi
+    fi
+}