David Briscoe 509594aec2 color: Use color_mt and normal indexing
Fix #34.

Set color_mt on new colors so add, subtract, multiply, is_color work.

We don't use ffi for color (32cf0e8), so remove cdata check for 0-based
offset indexing.

Add tests for creating colours and using operators.
2022-04-01 19:55:55 -07:00
..
2020-05-03 13:00:22 -04:00
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