Well, some of us were speculating on the wiki. So far, it seems pink is care/affection. Red would be anger or hostility. Blue is happiness, and maybe amusement too. As for green, it might be concern, or being deep in thoughts. For example, here is what I noticed for pink : it's when Al-An picks Robin up, it can be seen for a split second when she shouts "No" after he asks if she wants to forget him, and it is lightly present when he says "Our freedom". Adorable
Yes! Pink is 100% care/affection and no one will ever convince me it’s not, our tsundere alien boy is SOO soft for Robin, he just won’t admit it just yet ❤ And after getting lots of different opinions I’m now pretty confident that Green is in fact “processing data” (aka thinking / considering something / calculating stuff etc.), which would also explain why the buildings are all green as well! I’m not certain about the blue yet because we don’t see much of it, but general consensus seems indeed to be happiness so I’ll go with that till proven wrong lol
















