Yea it took me a second to remember why you've never seen that color before in the calci-sand. It's because it's the Gobi Gold and the white color [don't remember the actual name] mixed together. The gold really made her colors pop but we needed more and the pet store only had red and white left because they were going out of business so we grabbed a white and mixed it together. We cleaned out the sand left in her tank and used that to grout the tile and make her sandbox so it would still smell like her house. Didn't want to upset the princess too much in one day.
For beardies, if you're going to use sand, calci sand is better because it's much much finer than regular playsand and they partially digest and pass it if they eat a small amount. If they're eating the sand, like some babies/juveniles might or it gets on their food in large quantities and they still eat it, it can cause impaction. Playsand though it very rough and very large in comparison so it's harder for them to pass at all even in small amounts, and they don't digest at all it from what I understand.
The breeder we got Isis from only used calci-sand for the beardies and since they were all raised on it, they didn't eat it. Isis won't even touch her food if it touches sand. Which is also how you could tell she was done. She'd run through it and get her food EVERYWHERE! hahaha I stole my fiance's horsehair dusting brush from his architecture drawing class since he needs a new one anyway and it works perfect on the tile! Small enough to fit in the tank and the hair is suuuper soft. I dusted up some of the mealworms I fed her to get back on her good side that she got all over the tile. I love this already.