That is a croton - Codiaeum variegatum - named 'Mrs. Iceton'. If you are in zone 8, this plant will not survive the cold winter nor a freeze. It likes shade at noon, but will achieve its best color in full early morning or late afternoon sun. Don't overwater it and mulch it with pine.

There are thousands of varieties of the one species. They have an unstable genetic system and tend to suddenly 'sport' a new variety for no apparent reason. Here's one called 'Connie Cutler' sporting a solid yellow leaf.

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