themable prompt and some proposed themes

profile.d/themes/monokai.theme

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+# Monokai prompt theme — high-saturation, vivid hues on near-black
+# ------------------------------------------------------------------------------
+# 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.
+# ------------------------------------------------------------------------------
+# Monokai's signature: lime green, orange-yellow, hot pink/red, bright violet,
+# electric cyan — all on a near-black (#272822) background.
+# Palette overrides remap the dim ANSI regulars to their vivid high-intensity
+# equivalents so that ls, grep colour output, etc. also look more "Monokai".
+# ------------------------------------------------------------------------------
+
+# Palette overrides — boost regular colours to Monokai-vivid equivalents
+Red="\e[0;91m"          # hot pink/red   (#F92672)
+Green="\e[0;92m"        # lime green     (#A6E22E)
+Yellow="\e[0;93m"       # orange-yellow  (#E6DB74 / #FD971F)
+Blue="\e[0;94m"         # electric blue  (#66D9E8 → shift blue)
+Purple="\e[0;95m"       # bright violet  (#AE81FF)
+Cyan="\e[0;96m"         # electric cyan  (#66D9E8)
+
+PROMPT_COLOR_TIME_FG="$IYellow"      # orange clock text
+PROMPT_COLOR_TIME_BG="$On_IBlack"    # near-black Monokai background
+PROMPT_COLOR_BAR_BG="$On_IBlack"     # flat dark bar
+
+PROMPT_COLOR_OK_FG="$IGreen"         # lime green on success
+PROMPT_COLOR_OK_MARK="$IGreen"       # lime green checkmark
+
+PROMPT_COLOR_ERR_BG="$On_IBlack"     # keep dark — use colour for contrast
+PROMPT_COLOR_ERR_FG="$IRed"          # hot pink on failure
+PROMPT_COLOR_ERR_MARK="$IRed"        # hot pink X
+
+PROMPT_COLOR_ROOT_FG="$IRed"         # hot pink for root
+PROMPT_COLOR_USER_FG="$IYellow"      # orange-yellow for user
+PROMPT_COLOR_DIR_FG="$ICyan"         # electric cyan for path