E. Quadricolors.. BTA's come in many color morphs.. red, pink, orange and green being the most common. They are all BTA's. "Rose" anemones are are the same species as the green ones... just different colors. The name "True" Rose is a misnomer and has been much debated and discussed.
Some BTA's have a combination of colors, yellow tips, purple bases, red and green, or pink and green, speckled even... it's all a matter of personal preference which one to get.
Find one that appeals to you and just enjoy...