One or more of your livly's RGB values may have reached the maximum/minimum value.
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For example, if your Pygmy is white:
/coloringβ [R255/G275/B255]
・The Lapis Lazuli Dor Beetle (R:-2, G:-2, B:+4) will change your livly's color gradually as R and G values reduce.
・The Hawk Moth Larva (R:0, G:0, B:+7) will not change your livly's color since B is already at its maximum value and R and G values do not change.
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*/coloringβ can be confirmed by tapping the RGB icon on the upper right of the /food screen.
*Maximum RGB values may differ between species.
*The RGB values of each type of food can be confirmed via Yadokari Foods or the icon in the the upper right corner of the /food screen.
If your livly does not change color, please check its current RGB values via /coloringβ and give them feed accordingly.