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.