themable prompt and some proposed themes

profile.d/themes/dark.theme

@@ -0,0 +1,32 @@
+# Dark prompt theme — dark grey bar, cyan user, magenta path
+# ------------------------------------------------------------------------------
+# Theme files are NOT executed as shell scripts. load_theme() parses them
+# line by line. Only the following value forms are accepted:
+#
+#   KEY="$ColorVarName"    — reference to a colour variable from disp.sh
+#   KEY="${ColorVarName}"  — same with braces
+#   KEY="\e[...m"          — raw ANSI escape sequence (single block)
+#
+# Accepted keys:
+#   PROMPT_COLOR_*         — prompt slot colours (see profile.conf [prompt])
+#   Standard colour vars   — Black, Blue, On_IBlack, … (overrides the palette
+#                            from disp.sh for the whole shell session)
+#
+# Any unknown key, unsafe value, or shell construct will be ignored with a
+# warning — theme files cannot execute code.
+# ------------------------------------------------------------------------------
+
+PROMPT_COLOR_TIME_FG="$ICyan"       # Clock text
+PROMPT_COLOR_TIME_BG="$On_Black"    # Clock background (black)
+PROMPT_COLOR_BAR_BG="$On_IBlack"   # Main bar background (dark grey)
+
+PROMPT_COLOR_OK_FG="$IGreen"        # Exit-code text on success
+PROMPT_COLOR_OK_MARK="$BGreen"      # Checkmark colour on success
+
+PROMPT_COLOR_ERR_BG="$On_Red"       # Exit-code background on failure
+PROMPT_COLOR_ERR_FG="$BIWhite"      # Exit-code text on failure
+PROMPT_COLOR_ERR_MARK="$BIYellow"   # X mark colour on failure
+
+PROMPT_COLOR_ROOT_FG="$BIRed"       # Username colour when root
+PROMPT_COLOR_USER_FG="$ICyan"       # Username@host colour for normal users
+PROMPT_COLOR_DIR_FG="$IPurple"      # Working directory colour