Per my personal experience he doesn't look ill by the judge of his colour alone.

My guys go from light brownish colours when they temps vary or when they've just shed. Otherwise they are a shade of very dark brownish, with
lighter bellies with spots

Name:  louis12.jpg
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Size:  80.8 KB Louis here, light.
Name:  birgerlouisphotoshopsjov.jpg
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Size:  128.9 KBLouis (right) with Birger (left), in dark/black shades.