Echinata?

But is A.selago available in this color variant??

Yep. The green variant is very common in the Phoenix area here.

Besides A.selago looks like a tabletop acro but mines not.

Veron describes the colony structure as "Colonies are corymbose clumps, cushion-shaped or prostrate, depending on the length of branchlets." Basically they will be bushy with thin branches. Hard to say what yours will grow out to be at the size it is now. It looks maricultured so if it is a table they will mount it vertically anyways, like the maricultured Acro efflos. I wish they didn't do that, but it is what it is.
 
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