Added motion planel for raw/pitch/roll and acceleration. Consolidated all colors into one stylesheet in themes/palette.gd.

docs/colors.md

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+# Colors
+
+Edit `themes/palette.gd`: base swatches define the hues; derived shades use `lightened()`, `darkened()`, and `lerp()`. `SOFT`, `HIGH_CONTRAST`, and `INSTRUMENT` map them to theme roles. Treat derived static values as read-only.
+
+Regenerate after palette edits:
+
+```sh
+godot --headless --path . --script themes/build_theme.gd
+```
+
+Commit the generated themes and compass material alongside palette changes. The generator also updates the viewport background when needed.
+
+Controls inherit the active theme. Custom graphics use `get_theme_color(role, "SurfaceSide")` for instrument roles and `get_theme_color("font_color", "Label")` for text. Prefer existing roles before adding new ones.

docs/motion_panel.md

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+# Motion instrument
+
+Instance `components/motion_panel.tscn`. Run `scenes/motion_demo.tscn` with F6 for simulated telemetry; pause the feed to preview stale status.
+
+```gdscript
+$MotionPanel.set_telemetry(
+	Vector3(roll_degrees, pitch_degrees, heading_degrees),
+	Vector3(momentum_x, momentum_y, momentum_z),
+	Vector3(accel_x, accel_y, accel_z)
+)
+```
+
+- Orientation: positive roll right side down, positive pitch nose up, heading clockwise from north (0–360°).
+- Body axes: X forward, Y right, Z down.
+- Angular momentum: kg·m²/s, distinct from gyroscope angular velocity.
+- Acceleration: m/s², with gravity removed upstream.
+
+Missing values show dashes; non-finite samples are rejected. After `stale_after_seconds` (default 2), the banner marks held values STALE. `acceleration_full_scale` sets plot limits; numeric values remain unclamped.
+
+Edit layout and Labels in the scene tree. Preserve scene-unique names used by `motion_panel.gd`. The four graphics use `motion_instrument.gd`; `radius_source` keeps the circles and Z scale aligned. Colors inherit the active theme; see [colors.md](colors.md).