CLI(V1) (#11220)

Co-authored-by: openhands <openhands@all-hands.dev>
Co-authored-by: Xingyao Wang <xingyao@all-hands.dev>

openhands-cli/openhands_cli/pt_style.py

@@ -0,0 +1,30 @@
+from prompt_toolkit.styles import Style, merge_styles
+from prompt_toolkit.styles.base import BaseStyle
+from prompt_toolkit.styles.defaults import default_ui_style
+
+# Centralized helper for CLI styles so we can safely merge our custom colors
+# with prompt_toolkit's default UI style. This preserves completion menu and
+# fuzzy-match visibility across different terminal themes (e.g., Ubuntu).
+
+COLOR_GOLD = '#FFD700'
+COLOR_GREY = '#808080'
+COLOR_AGENT_BLUE = '#4682B4'  # Steel blue - readable on light/dark backgrounds
+
+
+def get_cli_style() -> BaseStyle:
+    base = default_ui_style()
+    custom = Style.from_dict(
+        {
+            'gold': COLOR_GOLD,
+            'grey': COLOR_GREY,
+            'prompt': f'{COLOR_GOLD} bold',
+            # Ensure good contrast for fuzzy matches on the selected completion row
+            # across terminals/themes (e.g., Ubuntu GNOME, Alacritty, Kitty).
+            # See https://github.com/All-Hands-AI/OpenHands/issues/10330
+            'completion-menu.completion.current fuzzymatch.outside': 'fg:#ffffff bg:#888888',
+            'selected': COLOR_GOLD,
+            'risk-high': '#FF0000 bold',  # Red bold for HIGH risk
+            'placeholder': '#888888 italic',
+        }
+    )
+    return merge_styles([base, custom])