What color is the underlying gold?
If the white gold underlying the rhodium plating is a nice acceptable color, there will be nothing jarring as the plating begins to wear a bit thin in spots, so you can go a long time between replating. If the color is slightly yellowish, more frequent replating will be necessary because the item will look poor that much sooner. And if the underlying material is strongly yellow or is actually yellow gold, the contrast will be dramatic, and replating will be required very frequently. Yes, you can get your yellow gold jewelry rhodium plated, but if the piece experiences significant wear, the good appearance may last only a fairly short time even if the rhodium plating quality is good, and almost no time if the plating is poor.
If the white gold underlying the rhodium plating is a nice acceptable color, there will be nothing jarring as the plating begins to wear a bit thin in spots, so you can go a long time between replating. If the color is slightly yellowish, more frequent replating will be necessary because the item will look poorly much sooner. And if the underlying material is strongly yellow or is actually yellow gold, the contrast will be dramatic, and replating will be required very frequently.
